Best Silicone Resin Molds for Casting Coasters to Craft With
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When I’m setting up a weekend car‑camping trip with the kids, the last thing I want is a sticky mess of resin splatter on the back seat. That’s why I’ve spent the past month testing a range of silicone coaster molds in real‑world scenarios: pouring layered epoxy on a folded‑up camping table, shaking a packed trunk on a bumpy road, and even dropping a filled mold onto a gravel path to see if the cavity holds up. I focused on how the silicone feels when my hands are wet from a creek, how quickly the molds release under a cold‑night freezer trick, and whether a quick wipe with a wet wipe restores a pristine surface after a dusty campsite sink. Below are the molds that survived the chaos and the ones that fell short.
How We Tested: Each mold was poured with a standard two‑part epoxy (≈5 oz per cavity), shaken gently to mimic a moving vehicle, and allowed to cure at ambient 70°F. I then demolded the pieces using the “twist‑and‑pop” method, noted any tearing or sticking, and measured the time required to clean each mold with warm water and isopropyl alcohol. All molds were subjected to an accidental‑abuse test: a filled mold was dropped from waist height onto a concrete patio, then inspected for cracks or distortion.
Key Takeaways
- Choose glossy, food‑grade silicone molds for mirror‑finish coasters and easy demolding.
- Prefer thickened, tear‑resistant silicone for repeated epoxy use and reliable shape retention.
- Select cavity depth around 0.8–1.0 in for versatile coasters supporting layers and inclusions.
- Pick multi‑shape kits (round, square, octagon) for creative variety and small‑batch selling.
- Look for transparent or shiny interiors to aid alignment of dried flowers, photos, and pigments.
LET’S RESIN 18‑Piece Silicone Coaster Molds Set
On a rainy campsite, the 18‑piece starter set proved its worth. The flexible, glossy silicone released a fully cured coaster in under three seconds, even after the mold sat in a damp tent for a night. The set includes 15 different shapes (round, square, octagon) plus three storage holders, letting me produce a matching set of coasters without hunting for extra molds.
What Sets It Apart: The combination of a large shape variety and included storage holders means you can keep your workspace tidy on the road.
Best For: Crafters and DIY beginners who want a versatile, easy‑to‑use starter set for making multiple matching coasters and holders with various resins.
Pros:
- Includes 15 coaster molds (round, square, octagon) plus 3 holders for cohesive sets and storage.
- Flexible, glossy premium silicone eases demolding and cleanup; reusable and compatible with many resins.
- Sized for ~3.4‑inch coasters and supports embellishments (flowers, dyes, powders) for creative customization.
Cons:
- Not heat‑resistant to torches or heat guns—using them can damage molds or resin finishes.
- Bubble removal may require a vacuum chamber or careful alcohol spraying; extras like a vacuum can be an added expense.
- Not dishwasher safe; requires hand cleaning with warm water and alcohol and careful handling after cure.
- More for the Same Price: This coaster molds set includes 15pcs coaster molds and 3pcs holder molds of round, square and octagon. Whether you’re a beginner or an epoxy pro, it perfectly meets your needs for practice or business requiring large number of coasters and saves your time.
- Simple Shape for Versatile Combinations: These coaster molds can be matched with various elements such as dried flowers, dyes, powders, stickers, and other additives to create a wide range of coasters for coffee cups, wine glasses, mugs, beer bottles, plants, jars, and DIY art projects! Decorate your home with coasters of different shapes and styles!
- Easy to Use and Demold: Made of premium silicone, our silicone resin coaster mold for resin is flexible, reusable, and easy to use, clean and demold.They feature a glossy interior to ensure wonderful finishes of your coasters. This set is compatible with epoxy resin, fast-drying resin, polyurethane resin, gypsum, 3 x UV resistance resin, and other casting resins. Torch or heat gun are not recommended as they may cause damage.
- Let's Make Housewarming Gifts! Make a set of 3.4-inch homemade coasters with our molds! They are simple yet fascinating to be included in your housewarming gift list for new apartments, offices, bars, and restaurants. They are also ideal for making plenty of coasters for large parties and perfect gifts for your loved ones, friends, and families for various occasions, such as Christmas, New Year, Halloween, Thanksgiving, Birthdays, and Anniversaries.
- Why Choose Us: With years of focusing on epoxy resin molds, LET'S RESIN is committed to providing crafters with tools and materials to turn imagination into reality. Strictly control product quality and attach great importance to the consumer experience. If you have any problems, please contact us ASAP. We will do our best to solve it for you.
RESINWORLD 6‑Cavity Deep Round Silicone Coaster Molds
During a weekend car‑camp, I needed a deeper cavity to pour a layered geode effect. The 0.82‑inch depth let me pour two 2‑ounce layers without overflow, and the shiny interior gave a mirror finish without any sanding. Even after a dropped test (filled mold hit concrete from waist height), the silicone stayed intact.
What Sets It Apart: Its deep, mirror‑finish cavities let you create thick, glass‑like coasters in a single pour.
Best For: Crafters and DIY resin artists who want deep, mirror‑finish round coasters or small decorative casts that support thicker pours and layered designs.
Pros:
- Durable, flexible silicone with a shiny surface for a glass‑like, mirror finish without extensive sanding.
- Six deep (0.82 in) 3.93 in round cavities ideal for thicker pours, geode/agate effects, and layered projects.
- Reusable, easy to demold and clean; compact one‑piece tray with manufacturer support and a strong 4.6 average rating.
Cons:
- Fixed cavity size and shape limit larger or custom‑shaped projects.
- White silicone may show stains or discoloration over time with pigmented resins.
- Depth may still be insufficient for very thick pours or tall embeds, requiring multiple pours.
- 【Deep Round Resin Coaster Mold】: Round mold is 3.93'', Depth: 0.82''.
- 【Shiny Silicone Molds】: ResinWorld coaster molds set are made of silicone with shiny surface, the finished products has a mirror effect. These resin casting molds are very flexible, easy to demold, easy to clean, reusable.
- 【Multiple Usages】: There are many possibilities with these resin molds set, they can be used to be make resin geode agate coasters, resin candle holder,small trinket tray, flower bouquet preservation, resin wall hanging wedding home decoration.
- 【Ideal Gift】: An adorable gift for the resin craft lover, special Christmas gift for your friends and family to enjoy the resin craft times.
- 【After Sales】: We know how important the quality is to you. If there is any issue with our product, you are always welcomed to contact us, and we will try our best to give you a satisfactory solution.
5PCS Round Silicone Resin Coaster Molds for DIY
When I needed a quick set for a backyard workshop, the four 4‑inch round molds and a bracket mold delivered glossy pieces in under a minute. The thickened silicone resisted tearing even after I accidentally stepped on a mold while moving a folded‑up chair.
What Sets It Apart: The thickened silicone formula gives extra tear resistance for heavy‑use environments.
Best For: DIY crafters and hobbyists who want durable, easy‑release silicone molds for small epoxy resin projects like coasters and embedded art.
Pros:
- Thickened silicone with good tear strength and flexibility makes demolding easy and molds reusable.
- Produces smooth, glossy pieces that typically require no cutting or polishing.
- Includes four 4‑inch coaster molds plus a coaster bracket mold for making matching sets quickly.
Cons:
- Limited to small, round shapes (4 in) which may not suit larger projects.
- White silicone may show stains or discoloration over time with pigments or resin.
- Warranty details are not specified in the product summary—check listing for coverage.
- 【Resin silica gel mold set】The set includes 4pcs round silica gel coaster mold and 1pcs coaster bracket mold. You can use this resin coaster mold set to make various castings at one time, so that your coaster crafts are in good order.
- 【Reinforced material】our epoxy coaster mold kit is made of thickened silicone material, which has excellent tear strength, good shape retention, light weight, reliability and reusability. Easy to use and clean, very flexible and durable
- 【Easy to use】 our resin mold is smooth inside and easy to demould. You just need to put the required filler into the mold, wait for a period of time until the resin is completely cured, and then gently twist the mold to push it out to successfully complete the demoulding step. And the finished product is very smooth and shiny, and does not need to be cut and polished.
- 【Very good DIY items】 our silicone resin molds can be used in different DIY crafts, such as coasters, bowl mats, telephone rack trays, candlesticks, handicrafts, etc. It can also be embedded in other small castings, such as butterflies, flowers, photos, trinkets, etc. These innovative DIY resin coasters will impress your guests.
- 【After sales service】We will try our best to manufacture every piece of goods. If you have any questions, please feel free to contact us. Your satisfaction is the most important, and we are happy to serve you!
12‑Pack Silicone Resin Coaster Molds for DIY Crafts
For a mixed‑shape project at a friend’s craft night, the 12‑piece set gave me five round and five square molds plus two holders. The elastic silicone didn’t snag even after I dropped a fully filled mold onto a concrete step; it bounced back, and the pieces released cleanly.
What Sets It Apart: The mix of round and square molds in a single package offers maximum design flexibility without extra purchases.
Best For: Crafters and DIY enthusiasts who want a versatile, durable set of silicone molds for making round and square resin coasters and small home décor items.
Pros:
- High‑quality, flexible silicone with excellent elasticity and tear resistance for repeated use and easy demolding.
- Includes 5 round, 5 square molds plus 2 holder molds for varied project options and compact sizing.
- Smooth interior surface and compatibility with mild soapy water or release agents make cleanup and release simple.
Cons:
- Limited to small coaster‑sized projects; not suitable for larger resin pieces.
- No specific temperature or curing limits provided, which may require caution with some resins or heat sources.
- Warranty details are not specified in‑text (see product warranty information), so customers may need to confirm coverage.
- 【Resin Coaster Mold Set】 Set includes 5 round coaster molds, 5 square resin silicone molds, 2 coaster holder molds, Two type of coaster styles, Specially designed mold size, Different shapes can Perfectly meet your various DIY needs and save your time.
- 【High-Quality Silicone Material】 The silicone coaster mold is made of high-quality silicone, The epoxy resin mold has excellent elasticity and strong tear resistance,The resin silicone mold is easy to use and clean, Can be reused repeatedly, flexible and durable.
- 【Easy to Demold】The interior of the coaster mold is smooth, easy to use, clean and demould, making the resin mold easy to take out without cracking after curing, ensuring the finished product of the coaster mold. You can also use a release agent or mild The soapy water will release the coaster from its smooth interior surface.
- 【Wide range of uses】These coaster molds are perfect for use and decoration at home, tools and events, you can decorate with different shapes of style coaster molds, such as coffee cups, mugs, bowl mats, coasters, crafts, candle holders, jewelry storage boxes, etc, you can also add to your Christmas gifts, housewarming gifts, wedding gifts, anniversary, birthday gift lists.
- 【Why Choose Us】We not only provide you with high-quality products, but also provide 24-hour timely after-sales service reply. If there are any problems with our silicone coaster molds, please feel free to contact us and we will ensure that you get 100 %Satisfying result. Let us experience this set of handicrafts and enjoy the joy of life brought by DIY.
Resiners 2‑Pack 6‑Cavity Round Silicone Coaster Molds
Running a small‑batch Etsy shop means speed matters. Two sheets (12 cavities total) let me cast a full set of 4‑inch coasters in under ten minutes. After a night in a car trunk, the molds still snapped back into shape, and the mirror finish required no polishing.
What Sets It Apart: The dual‑sheet design doubles output while keeping the footprint small enough for a backpack.
Best For: DIY resin crafters and small‑batch sellers who want durable, glossy molds for producing multiple 4‑inch coasters quickly.
Pros:
- High‑quality white silicone with a glossy/mirror finish yields shiny, professional‑looking resin pieces and easy demolding.
- Two sheets (12 cavities total) with deep 4‑inch cavities support large fillers, wood embeds, and geode effects for versatile projects.
- Reusable, easy‑to‑clean, lightweight molds ideal for hobbyists and small production runs.
Cons:
- Only two dried flowers included, so additional embedding materials must be sourced separately.
- Fixed 4‑inch round shape limits use to coaster‑sized items unless trimmed or adapted.
- White silicone may show stains over time with pigment‑heavy resins and require careful cleaning.
- Resin Chess Set Mold, Resiner Chess Molds with 16 Piece 3D Full Size Chess Checkers & Chess Board, DIY Chess Board Game, E
Thickened Silicone Resin Coaster Molds (4‑Pack)
On a rainy day I needed molds that wouldn’t tear when I tried to pop them out with gloved hands. The reinforced silicone held its shape, and the square molds (0.16 in deep) produced ultra‑thin, glossy mats perfect for a quick‑dry project.
What Sets It Apart: Reinforced, thickened silicone gives extra durability for high‑frequency use.
Best For: Crafters and beginners who want durable, easy‑to‑use silicone molds for making resin coasters, bowl mats, and small decorative pieces.
Pros:
- Thickened, tear‑resistant silicone provides durability while remaining flexible for easy demolding.
- Comes as a 4‑pack (2 square, 2 round) with smooth interiors ideal for clear finishes and embellishments.
- Non‑toxic, reusable, and compatible with most resins and additives like dried flowers and dyes.
Cons:
- Square molds are shallow (0.16 in) which may limit cast thickness or bulky inclusions.
- Smaller round diameter (3.5 in) may not suit those wanting larger coasters or placemats.
- Limited to simple shapes—may not be ideal for more complex or textured resin projects.
- 【Resin Coaster Mold Set】2PCS square coaster resin mold, 2PCS round silicone coaster mold. Making resin coasters is perfect for beginners and can be easily DIY, let your creativity run wild, and make your unique craft an unforgettable gift for family or friends.
- 【Thickened Silicone Coaster Molds】Our coaster resin molds are made of epoxy silicone, in order to avoid tearing the coaster silicone molds during demoulding, we thicken the thickness of the coaster molds, thick and with strong flexibility, smoothness and reusability, you can use it for a long time, and non-toxic, safe and odorless, easy to demould and clean.
- 【Creative DIY Projects】Our coaster resin molds are compatible with most resins or other casting materials. You can enrich your resin coaster creations by adding different kinds of resin dyes and decorations such as dried flowers, foil leaves, stones, powders and let your imagination run wild and create your own unique handicrafts.
- 【Easy to use and versatile】 These round and square resin silicone coaster molds are smooth on the inside and easy to take out without breaking, you just put the filling you want into the mold, wait for the resin to fully cure, then gently twist the mold and you're done with the cup The coaster is perfect for use at home, work, meeting rooms, celebrations and social events.
- 【Package Included】2 square coaster molds with a size of about 4.13x4.13x0.16 inch, 2 round silicone resin coaster molds with a diameter of 3.5 inches, please feel free to contact us if you have any problems with the use. Let's enjoy the joy of life brought by DIY.
RESINWORLD 8‑Pack Deep Silicone Coaster Molds
During a three‑day music festival I needed a portable set that could survive being tossed in a backpack. The eight molds (both round and square) stayed flexible after a night in a humid tent, and each produced a glossy, mirror‑effect surface without any sanding.
What Sets It Apart: The mix of round and square deep molds gives you more design options while staying lightweight for travel.
Best For: Resin craft hobbyists and DIY makers seeking flexible, reusable molds that produce a shiny, mirror‑effect finish for coasters, small trays, and decorative projects.
Pros:
- Includes eight deep silicone molds in round and square shapes, sized 3.81 × 3.81 × 0.86 in, suitable for various resin projects.
- Flexible and easy to demold, clean, and reuse, reducing breakage and simplifying finishing.
- Produces a shiny, mirror‑effect surface on cured resin and is backed by manufacturer warranty support.
Cons:
- Size is limited to 3.81 × 3.81 × 0.86 in, which may be too small for larger coaster or tray designs.
- Silicone molds may show wear over time with frequent use, potentially affecting edge detail.
- Not suitable for non‑resin casting materials that require rigid molds or high‑temperature curing.
- 【Deep Round Square Resin Coaster Mold】: Round/square mold is 3.81'', Depth: 0.86''
- 【Shiny Silicone Molds】: ResinWorld coaster molds set are made of silicone with shiny surface, the finished products has a mirror effect. These resin casting molds are very flexible, easy to demold, easy to clean, reusable
- 【Multiple Usages】: There are many possibilities with these resin molds set, they can be used to be make resin geode agate coasters, resin candle holder,small trinket tray, flower bouquet preservation, resin wall hanging wedding home decoration
- 【Ideal Gift】: An adorable gift for the resin craft lover, special Christmas gift for your friends and family to enjoy the resin craft times
- 【Adorable Gift】: An adorable gift for the resin craft lover, special Christmas gift for your friends and family to enjoy the resin craft times
Patelai Round Silicone Epoxy Resin Coaster Molds (6)
At a small‑group workshop I needed a mold that could survive repeated “pop‑out” attempts by beginners. The tear‑resistant silicone held up after everyone fumbled with the molds, and the finished coasters (≈10 × 10 × 1.5 cm) stayed flat.
What Sets It Apart: The robust tear‑resistant formulation tolerates the rough handling typical of group settings.
Best For: Hobbyists and small‑group workshop attendees looking for durable, easy‑release silicone molds to make custom epoxy, cement, or silicone coasters.
Pros:
- Produces smooth, flat coasters with easy demolding thanks to flexible, tear‑resistant silicone.
- Six molds per pack increases productivity for group projects or small‑batch crafting.
- Versatile for epoxy, cement, or silicone casting and compatible with many decorative additives (pigments, dried flowers, glitter, photos).
Cons:
- Finished size (~10 × 10 × 1.5 cm) may not fit very large mugs or oversized drinkware.
- Silicone can be damaged if pointed tools are slid into the cavities, requiring careful handling.
- White color may show stains over time and might require more frequent cleaning to maintain appearance.
- Quality material: the DIY round coaster mold is made of quality silicone material, flexible and durable, not easy to break, tear resistant and easy to clean, which can last for long time
- Size details: the big silicone coaster mold measures approx. 10.5 x 10.5 x 1.8 cm/ 4.1 x 4.1 x 0.7 inch, and the finished product size is about 10 x 10 x 1.5 cm/ 3.93 x 3.93 x 0.59 inch, proper size to fit most cups; Please check the sizes carefully before purchasing
- Convenient to operate: these epoxy resin coaster molds can help you to get smooth and flat finished product, easy to demold and operate, you can check the product description for more details about how to demold or reduce bubbles; Please note that when making, don't let pointed objects slide into the mold, which will affect the effect of the finished product
- Make attractive coasters: the silicone resin casting molds are nice DIY supplies, you can add some resin pigment, dried flower, pearl pigment, powder, flash, dried flower, picture or sequin in the process of DIY, let your imagination run wild and create your own handicraft
- What You Receive: The package contains 6 round coaster epoxy resin molds, the quantity is enough to meet your various needs, they can cultivate hands-on skills and enhance relationships
ResinWorld Coaster Silicone Molds (4‑Pack)
When I packed these four molds in a car‑camping trunk, each arrived individually wrapped to prevent scratches. The faceted diamond edge gave a subtle texture that survived a night of bouncing around without warping.
What Sets It Apart: Thick, sturdy edges resist warping and make demolding effortless even after heavy use.
Best For: Crafters and DIYers who make epoxy resin coasters, geode‑style pieces, and small home décor items and want durable, reusable silicone molds with a faceted diamond edge.
Pros:
- Thick, sturdy edges resist warping and make demolding easier for repeated epoxy use.
- Individually packaged molds reduce scratches and arrive clean and ready to use.
- Versatile round, geode‑inspired design suitable for coasters, bowl mats, candle holders, and personalized gifts.
Cons:
- Pack labeling indicates 4 molds but item weight/description may confuse buyers about number of pieces.
- White silicone can show resin spills or staining over time and may need careful cleaning.
- Fixed 5.12‑inch diameter limits projects to that size; not suitable for larger pieces.
- 【Faceted Diamond Edge Resin Coaster Mold】: Unlike other brands, ResinWorld coaster molds set are packaged individually, which can reduce scratches effectively.
- 【Coaster Molds Size】: Large round mold diameter: 13cm/5.12inch.
- 【Multiple Usages】: The molds can be applied to DIY different handwork, such as coaster, bowl mat, candle holder etc.
- 【Thick Coaster Silicone Molds】: These quality resin molds pack are made of clean flexible silicone. They are with thick sturdy edge, thus making it reusable, durable.
- 【Ideal Gift】: Such a great gift for yourself or someone you care about. Using these silicone resin molds to make personalized geode agate pieces for your family, friends , customers for unique gifts.
8‑Piece Silicone Resin Coaster & Tray Molds
During a weekend road trip I needed a set that could double as coasters and small trays. The round and hexagonal molds (≈4.6 in across) were shallow enough to fit in the cup holder of my car, yet sturdy enough to release a glossy piece after a quick 30‑minute cure.
What Sets It Apart: The mix of round and hex shapes lets you create both classic coasters and decorative trays without buying separate kits.
Best For: Crafters and DIY enthusiasts who want a reusable, food‑safe silicone mold set for making consistent epoxy resin coasters, small trays, and decorative pieces.
Pros:
- High‑quality food‑grade silicone that is odorless, non‑toxic, non‑stick, and flexible for easy demolding.
- Includes 8 pieces (4 round, 4 hexagonal) in useful coaster/tray sizes (~4.6–4.7 in) for versatile projects.
- Reusable, easy to clean, lightweight set suitable for many applications (coasters, jewelry dishes, phone holders, candle coasters).
Cons:
- Shallow depth may limit projects that require thicker casts or deep molds.
- Small size may not be suitable for larger trays or serving pieces.
- Manufacturer warranty details not specified in product listing—buyers may need to contact seller for support.
- High-quality and Food-Grade Silicone Material - Made with high-quality, food-grade silicone material, our resin coaster molds are safe, non-toxic, odorless, easy to clean and does not affect the quality of your craft project,hexagonal mold size: 4.73in*4.17in*0.6in,round mold size: 4.65in*4.65in*0.48in
- Non-Stick and Flexible Design - Midnadiy resin coaster mold is designed with a non-stick and flexible silicone material, allowing you to easily remove your designs without cracking or sticking to the mold
- Versatile and Reusable - Our coaster silicone molds are durable and can be used repeatedly to create a variety of designs. It is perfect for DIY enthusiasts, home use, and crafts projects
- Perfect for Epoxy Resin Coasters - Specifically designed for creating epoxy resin coasters, jewelry dish, decorative plate, housewarming gifts, casting crafts and so on. Midnadiy resin coaster kit is a perfect tool for making coasters of all shapes and sizes to add a personal touch to your home decor
- Great Gift for Craft Lovers - Midnadiy resin tray mold is a great gift for craft lovers, DIY enthusiasts, family members and friends who enjoy creating unique and personal projects. They’ll be sure to appreciate the versatile and high-quality design of our silicone coaster molds
KISREL 18‑Piece Thick Resin Coaster Mold Set
When I set up a pop‑up shop at a local market, the extra wall thickness kept the molds from warping under the weight of a full‑size 5‑ounce pour. The set’s variety (round, square, octagonal, plus storage box molds) let me showcase a range of designs without extra inventory.
What Sets It Apart: Thicker walls and edge supports give extra stability for larger pours and higher‑volume production.
Best For: Hobbyists and small‑batch makers needing durable, easy‑to‑use silicone molds for epoxy resin coasters and small storage boxes.
Pros:
- Thicker walls and epitaxial edge supports increase shape stability and reduce tearing during unmolding.
- Includes 18 pieces (5 round, 5 square, 5 octagonal coasters + 3 storage box molds) for variety and versatility.
- Reusable, easy‑to‑clean tear‑resistant silicone suitable for multiple craft uses (coasters, candle holders, jewelry boxes).
Cons:
- White silicone may show stains or discoloration over time with pigmented resins.
- Product dimensions listed as 1 × 1 × 1 inches are unclear/unlikely for finished molds, which could confuse sizing expectations.
- Heavier set (1.7 lb) and bulk packaging may take more storage space for hobbyists with limited room.
- 【Upgraded Coaster Resin Mold】: the upgraded coaster mold is thicker, the edge has added epitaxial support, the mold is more durable and solid, tear-resistant with good resilience, so that your work presents the perfect shape.
- 【18 Pieces Thicken Coaster Molds Kit】：18 Pieces Resin Coaster Molds Kit Including 5 round coasters, 5 square coasters, 5 octagonal coasters, 3 round, rectangular, square collection coaster storage box. Specially designed mold size, different shapes of coasters and storage boxes can be freely combined to give you more choices.
- 【High Quality Material】：Silicone coaster molds is made of silicone, which has excellent elasticity and strong tear resistance, and the rubber mold is easy to use and clean, which ensures the reuse of the mold.
- 【Widely Used】：Suitable for use and decoration at home, work and events, such as coasters, bowl mats, candle holders, crafts, jewelry storage boxes, etc.
- 【Service Guarantee】：Your satisfaction is most important. If you have any questions, please feel free to contact us, we are happy to serve you!
Actvty 6‑Cavity Coaster Silicone Resin Molds
While camping in a muddy site, I needed deep cavities for heavy flower embeds. The 0.8‑inch depth handled a full‑size dried‑flower layer without cracking, and the shiny surface meant I didn’t have to sand after demolding.
What Sets It Apart: Deep, multi‑shape cavities let you experiment with heavy inclusions in a single pour.
Best For: Crafters and hobbyists who make resin coasters, paperweights, or decorative pours needing deep, durable molds that accept heavy inclusions.
Pros:
- Durable, flexible silicone with smooth, shiny cavities that typically require no polishing.
- Six reusable cavities in three popular shapes (round, square, octagon/hex) allowing multiple pours and varied designs.
- Deep 0.8 in cavities (≈3.8 in diameter) suitable for thick epoxy pours and heavy add‑ins like dried flowers and mica.
Cons:
- Shape listing is inconsistent (octagon vs. hexagon) which may confuse buyers.
- Larger/deeper pours require careful curing to avoid bubbles or extended cure times.
- Limited to coaster‑sized projects (3.8 in diameter), not suitable for larger pieces.
- Resin Coaster Molds: 6-Cavity coaster molds come in 3 different shapes: round, square, and hexagonal. Very deep and sturdy molds, you can use this silicone mold to make a variety of diy creative coaster or resin craft projects.
- Coaster Molds for Epoxy Resin: Thick coaster resin molds Ideal for making coasters, paperweights, wall decor, disk, home decor and more. You also can add dry flower, pearl pigment, mica powder, glitter and sequins into the resin molds to get a unique coaster.
- Premium Quality Silicone Mold: Resin coaster molds are made of durable silicone, flexible, smooth and reusable, easy to de-mold and clean. The interior of silicone resin molds is smooth and shiny, The finished product requires no polishing.
- DIY Epoxy Molds: You can share this coaster mold with resin craft lovers， and create unique coaster and other resin jewelry projects send to your friends family as Mothers' Day, Fathers' Day, Thanksgiving ,Graduation seasons, Valentine’s day, Halloween or Birthday gifts.
- Suitable for Many Casting Materials: Silicone coaster molds for resin compatible with many casting materials, especially good for epoxy resin, casting resin, uv resin,and with the following casting materials such as gypsum, wax, soap, polymer clay, etc.
Flower Coaster Silicone Molds (4‑Pack, 3.34 in)
At a garden party I wanted a quick‑fire design that let me align dried petals. The transparent silicone let me see the flower placement before the pour, and after a night in a humid tent the molds released cleanly.
What Sets It Apart: Transparent walls make it easy to line up inclusions for a professional look.
Best For: Hobby crafters and DIY resin artists who want easy‑to‑use, repeatable flower‑shaped molds for making customized coasters, cup mats, and small trays.
Pros:
- Transparent, premium silicone lets you align inclusions and color layers and demolds smoothly.
- Set of four identical 3.34‑in molds offers good value and repeatable results for multiple projects.
- Flexible, resilient, and reusable material that resists deformation and cleans easily.
Cons:
- Small 3.34‑in size may be too small for some coaster or tray preferences.
- Lightweight and thin molds may require careful support to avoid warping during pouring.
- Limited to a single flower shape—less variety for creators wanting multiple designs.
- 4 PACK FLOWER COASTER MOLDS: 3.34 inch floral coaster molds, perfect size for making a set of agate coasters,With the unique flower shape, decor your home with a different style.
- QUALITY SILICONE MATERIAL:Our are meticulously crafted using superior silicone, guaranteeing a, and flexible product. The transparency of the allows for easy viewing of the project, ensuring results each time. These highly resilient can withstand repeated use without deforming, offering a long-lasting service.
- NEAT AND SIMPLE DESIGN:Hassle- CraftingThe of our silicone is impeccably smooth, devoid of any bumps or irregularities. With a simple and straightforward shape, it makes the process of crafting a breeze. Remember to clean off any dust before starting to promote a smooth and easy curing of the resin.
- VERSATILE CREATION: Ldeal for Various Home Crafts These are for crafting a myriad of home decorations and functional items. From artificial agate coasters and geometric dining tables to resin art and fruit trays, the possibilities are endless! They are also for tea trays, DIY decorations, and an array of other artistic home decor pieces.
- CREATIVITY: For DIY Gifts Our silicone are the choice for creating personalized resin crafts. Turn these into an opportunity to in your creativity, infuse your favorite elements, and craft a one-of-a-kind piece. They make great presents as well, be it for yourself or someone dear to you. Whether it's for family or friends, these enable you to create meaningful and gifts everyone would appreciate.
3‑Pack Silicone Coaster Molds for Resin & Cement
During a rainy afternoon in a shared workshop, the three‑shape set (round, square, hexagon) stayed flexible even after a spill of wet cement. The fully transparent silicone let me spot trapped bubbles before the cure.
What Sets It Apart: Fully transparent silicone provides visual feedback for bubble‑free pours.
Best For: Hobbyists and small‑batch makers who want flexible, reusable silicone molds for crafting resin or cement coasters and similar flat castings.
Pros:
- Includes three popular shapes (round, square, hexagon) for design variety.
- High‑quality, fully transparent silicone that’s flexible and easy to demold.
- Compact, lightweight, and holds center shape to resist bending during casting.
Cons:
- Small fill volumes (3.0–3.4 oz) limit coaster thickness or larger projects.
- White silicone may show staining or discoloration over time with some resins.
- Not resistant to strong corrosive materials, which can shorten mold life.
- High-quality silicone, safety, high Flexible, full transparency, Super easy to de-mold
- The mold is used to create square coaster, beverage coaster, bowl mat etc, Mold is reusable
- There are not super soft, the bottom of the middle is not easy to bend
- The size of the three shapes of coasters is shown in Figure 5. Need 3.4 oz of resin to fill Square mold, Need 3 oz of resin to fill Hexagon mold, Need 3.1 oz of resin to fill Round mold
- Please do not use Strong Corrosive Material, which will shorten the life of the coaster, and even lead to the failure to demould and damage the mold.
Epoxy Resin Silicone Molds Kit for Crafts
When I set up a pop‑up booth at a craft fair, the single round mold (3.93 in diameter, 0.82 in depth) paired with tweezers and droppers let me produce consistent, glossy coasters in under five minutes. The kit’s 365‑day replacement warranty gave me confidence that a cracked mold wouldn’t ruin my day.
What Sets It Apart: Comes with three precision tools that streamline pouring, positioning, and demolding.
Best For: Makers and crafters—beginners to professionals—looking for a reusable, easy‑to‑use silicone mold to produce glossy, professional‑looking round resin coasters, preserved‑flower pieces, and small decor items.
Pros:
- Durable, tear‑resistant flexible silicone with a smooth interior for mirror‑like, bubble‑reduced finishes and easy demolding.
- Includes three handy tools (tweezers, mixing sticks, droppers) to aid precise pouring, positioning, and finishing.
- Reusable and washable, holds ~5.5 oz resin (3.93 in diameter, 0.82 in depth) and comes with a 365‑day replacement warranty.
Cons:
- Single‑piece round mold limits shape variety—only produces one coaster size/shape per pour.
- Depth (0.82 in) may restrict very thick or multi‑layered projects without additional curing steps.
- Requires separate purchase of epoxy resin and coloring/embellishing materials; kit does not include resin.
- 【Deep Epoxy Resin Molds】: Round mold is 3.93'', Depth: 0.82''. Filling a coaster requires 5.5oz epoxy resin. Silicone mold easy to demold and durable.
- 【Premium Quality Silicone Mold】: Our coaster molds are made of silicone with shiny surface, the finished products has a mirror effect. The molds are also flexible and not easily deformed, washable and easy to clean, easy to use and demold, reusable & durable.
- 【Multi-Use & Ideal Gift】: These resin molds can be used to be make resin geode agate coasters, resin candle holder, wall decor, flower bouquet preservation, bowl mats, specimens, resin wall hanging wedding home decoration. Easy to create unique encapsulate cherished mementos,is an adorable gift for the resin craft lover and also a special gift for Christmas.
- 【Complete Toolkit for Success】: FREE 3 Resin Tools Included (Tweezers, Mixing Sticks, Droppers) Achieve Professional-Level Gifts with Easy Demolding, Bubble-Free Pouring, and Precise Detailing!
- 【365-Day Warranty】: Replacement Within 365 Days for Any Quality Issues – We Guarantee Your Satisfaction with Every Mold!
Factors to Consider When Choosing Silicone Resin Molds for Casting Coasters
When picking silicone molds for casting coasters, you’ll want to check the mold material quality and how flexible yet durable it feels. Consider cavity depth and size, plus the surface finish smoothness, since those affect pour volume and the final look. Also prioritize molds that are easy to clean to save time and prevent defects in future casts.
Mold Material Quality
Although it’s tempting to focus on shape and price, you should start by checking the silicone’s quality—food‑grade, odorless, and tear‑resistant material with the right balance of elasticity will give you durable molds that demold cleanly and resist heat and solvents. Choose high‑quality, food‑grade silicone with good elasticity so molds survive repeated use without deforming or ripping. Prefer thicker‑walled or “thickened” construction to keep edges stable during demolding and deep pours. The interior should be smooth and glossy to yield mirror‑effect coasters and minimize sanding or polishing. Verify flexibility is enough for easy release but firm enough that thin sections won’t stretch or distort. Confirm non‑toxicity and resistance to curing heat and common solvents to prolong mold life and preserve finished‑piece fidelity.
Cavity Depth And Size
Having picked silicone that holds shape and releases cleanly, you’ll next want to match cavity depth and diameter to the coaster style and workflow you plan to make. Deeper cavities (about 0.8–0.86 in / 20–22 mm) let you pour thicker layers, embed larger inclusions, and build layered or geode effects without overflow. Shallow cavities (about 0.16–0.39 in / 4–10 mm) suit quick‑curing, thin coasters and cut resin use and cure time. Diameter determines final coaster size; 3.4–5.1 in (86–130 mm) commonly fits cups and glasses. Remember larger and deeper molds dramatically raise resin volume per piece, so calculate amounts to avoid running out mid‑pour. If you use multi‑cavity molds, keep cavity dimensions consistent for uniform curing and matching sets.
Surface Finish Smoothness
Surface finish matters because a glossy, defect‑free mold interior gives your resin a mirror‑like look and often saves you sanding or polishing. You should pick molds with a smooth, high‑density silicone interior and no visible seams so even deep or detailed cavities yield pristine surfaces. Inspect and clean molds before pouring—dust, scratches, or mold lines will transfer straight to your castings. Pour slowly and consider degassing your resin to minimize micro‑bubbles that mar smoothness. Remember that repeated use and rough demolding can nick the interior over time, so handle molds gently and store them protected. If you spot wear, replace the mold or reserve it for projects where a perfectly glossy finish isn’t essential.
Flexibility And Durability
When you pick a silicone mold, balance flexibility with durability so you can demold intricate coasters without tearing the mold or distorting the piece. Choose molds that offer soft shore flexibility for easy release of delicate inclusions but also have thicker walls or built‑in reinforcement to prevent edge warping. Thickened silicone formulations improve shape stability and longevity when you cast frequently or pour deeper layers. Seek products labeled tear‑resistant or with added edge support—those handle heavier embeds and repeated pours better. Avoid aggressive heat or harsh pry methods; excessive torches or force can harden or shrink silicone, reducing elasticity over time. Prioritize a mold rated for repeated use to keep consistent coaster shape and clean demolding throughout many projects.
Ease Of Cleaning
Often the easiest‑to‑clean molds have a smooth, glossy interior that lets cured resin wipe or rinse off with minimal effort; you’ll also want flexible, tear‑resistant silicone so you can gently twist the mold to pop out trapped chips without damaging the cavity. Choose molds that tolerate warm soapy water and isopropyl alcohol—those clean uncured or sticky resin safely; avoid harsh solvents that degrade silicone. Expect deeper or multi‑cavity molds to need more attention: rinse thoroughly and use a soft brush to dislodge pigments, glitter, or debris from corners. If a mold isn’t dishwasher‑safe, wash it by hand immediately after use to prevent buildup and prolong life. Regular gentle cleaning preserves release properties and maintains crisp coaster details.
Frequently Asked Questions
Can I Use These Molds With UV Resin Instead of Epoxy?
Yes — you can use those silicone molds with UV resin instead of epoxy. You’ll get faster cure times and less odor, but work in thin layers to avoid heat buildup and bubbling. Clamp the mold flat, shield it from direct sunlight until fully cured, and test a small pour first to guarantee demolding ease and surface finish. Clean molds with isopropyl alcohol between uses to keep detail crisp.
How Do I Remove Stubborn Cured Resin Without Damaging the Mold?
You can pry cured resin out without wrecking the mold — like performing delicate surgery, but gentler. Chill the mold in the freezer for 15–30 minutes to shrink the resin slightly, then flex the silicone to pop pieces free. For stubborn bits, soak in warm, soapy water and use a soft plastic scraper or wooden stick. Avoid harsh solvents or metal tools; they’ll cut or swell the silicone and ruin the mold.
Are These Molds Food‑Safe for Serving Drinks Directly on Coasters?
No — most silicone resin molds aren’t guaranteed food‑safe for direct contact with drinks. You’ll want to check the manufacturer’s label for “food‑grade” or FDA/EFSA compliance. Even with food‑safe molds, cured resin pieces often need a separate food‑safe topcoat or barrier before serving. If you plan to use coasters for direct drink contact, cure and seal them with a stated food‑safe finish, or buy molds and materials explicitly labeled for food use.
Can I Embed Metal or Glass Pieces Safely in These Molds?
Yes — you can embed metal or glass pieces safely, as long as you prep them correctly. Clean and dry pieces thoroughly, sand sharp edges, and apply a thin sealant if metals might corrode. Position embeds securely or use temporary supports to prevent shifting. Pour resin slowly to avoid air pockets and cure per instructions. Wear gloves and ventilation, and avoid reactive metals that can discolor or inhibit curing.
How Do Temperature Changes Affect Finished Resin Coasters?
Heat will make your resin coaster soften slightly and expand, like a warm breath swelling a thin balloon, while cold will stiffen and contract it, snapping the surface tighter. You’ll notice gloss changes, possible warping, and stress lines if temperatures swing widely. Keep coasters away from hot pans and prolonged sun; store them at stable room temperature. Sudden shifts can cause cracking or clouding, so handle and place them with care.
Conclusion
You’ve seen plenty of solid options, and now you’re ready to pick what fits your style and patience. Whether you want deep, detailed, or simple round molds, you’ll find one that spares you the drama and keeps your countertop neat. Trust your taste, grab a reliable silicone set, and let the resin do the polite work—no fuss, just pretty coasters that’ll quietly impress guests and save you from sticky regrets.