The best epoxy resin moulds, compared.
Top pick: ZMD 6-cavity deep round mould Best value: ZMD 6-cavity deep round mould – About £7.59 for six stated cavities at about 4 inches and 165 ml, 4.7 from 30 reviews, only if that depth is the job. Updated 22 October 2026.
An epoxy resin mould is the silicone cavity you pour into for coasters, holders, words, trays, frames, jewellery shapes, or a first kit that includes those cavities and the liquid. UK shoppers on amazon.co.uk use them mostly for coasters or a first kit. You tell a sound mould by glossy release, wall thickness, depth, and whether resin is already in the box. A suitable cavity is flat and unmarked. It flexes without tearing and copies a smooth face. Scratches, thin letter strokes, and heat-damaged shine are the failures reviewers describe. A bottle of resin with no mould in the box is a different product. Coaster sets, word moulds, shallow trays, deep rounds, jewellery cavities, and geometric kits do not substitute for each other. Shallow coasters suit ordinary casting resin. Deep cavities need a casting resin rated for that thickness, because coating resin in a deep mould overheats. A mould-only set still needs resin, cups, and gloves. Shape, depth, finish, and what the box contains are set out in the [epoxy resin mould buying guide](/hub/fillers-adhesives-and-sprays/epoxy-resin-mould/sub/epoxy-resin-mould-buying-guide).
An epoxy resin mould is the silicone cavity you pour into for coasters, holders, words, trays, frames, jewellery shapes, or a first kit that includes those cavities and the liquid.
36 products checked · 58 hrs invested · +22,400 readers
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Personal buying guide
Question 1 of 2
What are you pouring?
The ZMD sheet is one silicone mould with six round cavities, listed at about £7.59 and 170 g. The seller states about 4 inches across, 0.8 inch deep, and about 165 ml each, on a sheet of 32.8 x 22 x 2 cm, and says the cavities are for epoxy and casting resin, not coating resin. On amazon.co.uk it shows 4.7 from 30 reviews, and 10 UK reviews were read. Buyers who poured called it sturdy, deep enough for a thicker piece, and flat on arrival, with one new user reporting no sticking. The limit is size: one reviewer measured about 10 cm by 1.75 cm and found that large for a regular coaster, and several buyers had not poured yet. Thirty ratings cannot carry the same weight as a set with thousands. At this price it is the best value if a deep round is the piece you want, and a poor buy if you wanted a thin mat under a mug.
Pros
Cons
Best for: You want thick round casts or paperweights and you accept about 165 ml per cavity.
Less suitable: You want a thin coaster, a holder, or a result backed by thousands of reviews.
Specifications
Common questions
Is this for coating resin?
The listing says the cavities are for epoxy and casting resin, not coating resin.
How big is each round?
The listing says 4 inches across, about 0.8 inch deep, and about 165 ml. One UK reviewer measured about 10 cm by 1.75 cm and found that large for a regular coaster.
The HeyClear kit pairs a picture-frame mould with 1 litre of epoxy, glitter, gold flakes, gloves, cups, a silicone mat, and a manual, listed at about £24.99 and 1.69 kg. On amazon.co.uk it shows 4.6 from 860 reviews, the highest star line in this comparison, though only 9 UK review texts were in the file. Buyers called it an easy start, used it for wedding-favour keyrings, and described the pack as substantial. One reviewer said the resin took 3 days to set and they would not buy it again, and another found it not the easiest to use. One parcel arrived without the silicone mat. The listing asks whether the resin is non-toxic, and the extracted bullets do not give a hazard classification. You get a named frame and a litre of liquid, and you still read the bottle for the mix ratio rather than treating the star line as a cure guarantee.
Pros
Cons
Best for: You have no resin yet and you specifically want a photo-frame pour with a litre in the same box.
Less suitable: You already own resin, you need coaster holders, or you need a thick pile of UK reviews that describe the cure.
Specifications
Common questions
Does this kit include a mould and resin?
Yes. The listing includes a picture frame mould and 1 litre of epoxy, plus glitter, gold flakes, gloves, cups, a silicone mat, and a manual.
Is the resin described as non-toxic?
The listing asks the question. The extracted bullets do not give a hazard classification.
The LET'S RESIN beginner kit puts 500 ml of epoxy in the box with four silicone moulds, 12 glitter colours, dried flowers, cups, sticks, gloves, and droppers, listed at about £23.99. On amazon.co.uk it shows 4.5 from 3,504 reviews, the largest count here, and 50 UK reviews were read. Beginners report clear casts and an easy mix, and one buyer set a memorial piece. The mould shapes are not named, and reviewers often say the cavities are small, which fits the seller's jewellery uses (pendants, rings, bracelets) and not a coaster. Instructions are a frequent complaint: missing, or limited to safety, so the pour was guesswork, and the measuring-cup marks were hard to read. The age range on the listing is Adult. You get a complete first box with a long review history, and you still need a ratio the leaflet may not teach.
Pros
Cons
Best for: You have never poured, you want jewellery-scale casts, and you will look up the mix ratio if the leaflet only covers safety.
Less suitable: You want coasters, a named mould shape, or you already have a bottle of resin.
Specifications
Common questions
Which mould shapes are included?
The listing says four kinds of silicone moulds. It does not name the shapes.
Is this listed for children?
The age range on the listing is Adult. Gloves are included. A hazard classification is not in the saved listing.
The LET'S RESIN 18-piece set is 15 silicone coaster moulds and 3 holder moulds in round, square, and octagon, model ELR00207, listed at about £17.99 and 599 g. On amazon.co.uk it shows 4.5 from 2,399 reviews, and 50 UK reviews were read. Beginners report easy release and a thickness they were happy with for the resin they already use, including one photo cast with little trouble. The seller states a finished coaster of about 3.4 inches and says a torch or heat gun is not recommended because it may damage the moulds. The cover image shows a pattern the plain cavities do not cast, which is the main expectation gap in the sample, and a minority call the silicone thin. No single tear or leak dominated those 50 reviews. Resin is not included. This is the top pick when the job is coasters and a holder, and you already have casting resin.
Pros
Cons
Best for: You want a coaster set with holder moulds and you will ignore the patterned cover photo.
Less suitable: You need resin in the box, pendants, or a heat gun on the silicone.
Specifications
Common questions
Does this set include resin?
No. It is 15 coaster moulds and 3 holder moulds.
Can you use a heat gun on these moulds?
The listing says a torch or heat gun is not recommended because it may damage the moulds.
The Opopark set is three silicone word moulds for Love, Home, and Family, listed at about £7.99 and 165 g, with no resin in the box. On amazon.co.uk it shows 4.5 from 697 reviews, and 50 UK reviews were read. Many buyers call the set good for the money, easy enough for a first decoration, and sturdy enough for gifts. The repeated limit is the letter strokes: reviewers describe thin, flimsy walls, knobbly marks that needed sanding, and resin that stuck and snapped on the first demould. One UK reviewer said the letters face the opposite way from the product photo, so the cast can read reversed. The seller says to wait until the resin is fully cured, then flex. You are buying three words at a low price, and you check the cavity against the photo before you mix.
Pros
Cons
Best for: You want those three words, you will compare the cavity with the photo, and you will wait for a full cure before you flex.
Less suitable: You need the letters to match the product photo, or you need thick walls for a first demould.
Specifications
Common questions
What words do these moulds cast?
The set is sold as Love, Home, and Family word moulds.
Do the letters match the photo?
One UK reviewer said the letters face the opposite way from the product photo, so the cast can read reversed.
The ZEROMX kit includes 600 ml of epoxy the seller calls 1:1, four silicone moulds (vase, pyramid, sphere, and cube), dried flowers, foil, glitter, gloves, and a wooden LED base, listed at about £23.79 and 1.38 kg. On amazon.co.uk it shows 4.5 from 179 reviews, and 29 UK reviews were read. Beginners used the pyramid and cube before they tried the vase or sphere, and several called it an easy all-in-one box for a holiday or a birthday. One buyer said the instructions were useless for a first pour. One experienced user said the resin would not set and spoiled other moulds, so that failure is in the sample and is not a pattern across all 29 texts. The listing does not say whether the LED base is battery or mains, or whether any plug is a UK 13 A plug. The title positions the kit for adults. You buy it for the four named shapes, and you skip it if the light has to plug in on day one.
Pros
Cons
Best for: You want geometric display pieces and you can live without a stated power supply for the LED base.
Less suitable: You need a known UK plug, coasters, or a resin you have already cured successfully.
Specifications
Common questions
Which moulds are in the kit?
The listing names a vase, a pyramid, a sphere, and a cube, plus 600 ml of epoxy and a wooden LED base.
How is the LED base powered?
The listing does not say battery, mains, voltage, or whether there is a UK plug.
The EPODA set gives you four round coaster moulds, four square coaster moulds, and two holder moulds, listed at about £13.99 and 330 g. On amazon.co.uk it shows 4.4 from 385 reviews, and 14 UK reviews were read for this note. Buyers who liked the silicone used colour and dried flowers, and several treated the holder moulds as the part that made the price sensible. The same listing disagrees with itself: other fields say 8 pieces, 9 items, and a 10-pack, while the bullets add up to ten moulds. In that sample one square mould was not flat, so the coaster came out uneven, and square cavities arrived with dents and scratches. Circle moulds stuck for one buyer, who tore the piece on three of four when they pulled them out. Resin is not included, and the file states no cavity depth in millimetres.
Pros
Cons
Best for: You already own resin and want round and square coasters with holder moulds at about £13.99.
Less suitable: You need a guaranteed flat cavity, a listing that agrees on the piece count, or resin in the box.
Specifications
Common questions
Does this set include epoxy resin?
No. The listing is silicone coaster moulds and two holder moulds only.
How many moulds are in the box?
The bullets list 4 round coaster moulds, 4 square coaster moulds, and 2 holder moulds. Other fields on the same listing say 8 pieces, 9 items, and a 10 pack.
The TPTGIAR box is 16 small silicone shapes, including a bear, cat, cloud, crown, star, flower, hearts, and a teardrop, plus 20 beaded chains, listed at about £5.99 and 110 g. The title says resin kit, but the contents list does not include resin, pigment, or mixing cups. On amazon.co.uk it shows 4.4 from 5 reviews, and 3 UK texts were in the file. One buyer had not poured yet, and another described the moulds and gold-coloured ball chains as well made and easy to demould for keyrings. No fault is described in those three texts, which is too small a sample to treat as a clean bill of health. The seller says the cavities have round holes so you do not drill. You buy this for jewellery shapes and chains, and you still need your own epoxy.
Pros
Cons
Best for: You already have resin and you want small pendants and chains for keyrings.
Less suitable: You need a first bottle of epoxy, coasters, or a review count you can lean on.
Specifications
Common questions
Is resin included?
No. The contents are 16 silicone moulds and 20 beaded chains.
Do you need to drill the pendants?
The listing says the moulds have round holes so you do not drill. Only three UK reviews are in the file, and they do not describe a fault.
The ZHUOmengyun pair is one heart mould at 15.6 x 18.9 x 3.3 cm, with a 1.8 cm cavity the seller rates at about 12.05 oz, and one five-compartment square frame at 18.3 x 18.4 x 1.65 cm, about 11.56 oz. The set is listed at about £8.99 and 280 g. The seller says to flex the silicone after 24 hours and describes a mirror-smooth interior for photo frames, flowers, and bookends. There is no Customer Reviews line in the saved listing, so that 24-hour wait is an instruction, not a result from UK shoppers. The non-toxic wording on the listing refers to the silicone, and no resin hazard label is in the file because resin is not included. You are buying two deep keepsake cavities with no review sample for tears, warps, or a sticky release. A 1.8 cm heart is already a casting depth, not a thin coating.
Pros
Cons
Best for: You want a large heart or a compartmented frame and you will judge the silicone yourself on the first pour.
Less suitable: You want coasters, a reviewed mould, or resin already in the parcel.
Specifications
Common questions
Does this set include epoxy resin?
No. It is two silicone moulds only.
When does the seller say to demould?
The listing says to flex the mould after 24 hours. There are no shopper reviews in the saved listing to confirm that time.
The simarro set is two rectangle tray moulds at 19 x 14 x 1.2 cm and two heart moulds at 5.5 x 5 x 0.9 cm, listed at about £5.39 and 210 g. The seller describes flexible silicone and says it releases dried resin, and also names concrete, soap, fondant, and clay. There is no Customer Reviews line in the saved listing, so none of that release claim has a shopper check here. The food-grade line is the seller's wording for the silicone only, with no certificate in the file, and it does not document the cured resin as a food-contact surface. The rectangles are shallow trays rather than a deep coaster, and the hearts are jewellery-scale. Resin is not included. At about £5.39 you are paying for four stated cavities and accepting that wear, flatness, and release are untested in this file.
Pros
Cons
Best for: You want two shallow trays and two tiny hearts and you will test one pour before you rely on them.
Less suitable: You need a reviewed coaster set, a holder, or a food-contact surface.
Specifications
Common questions
Does the seller say these work with concrete and soap?
Yes. The bullets also name resin, fondant, and clay.
Does food-grade silicone make a food-safe coaster?
The listing uses food-grade for the silicone. It does not document the cured resin as a food-contact surface. There are no shopper reviews in the saved listing.
Ten amazon.co.uk epoxy resin mould and kit listings were scored on a 0–100 scale. There is no laboratory test. Amazon evidence is 40 points: the star rating, with more weight when hundreds of UK ratings sit behind it and less when the line is missing or under about 30 ratings. Job fit is 30 points: the listing names one job, such as coasters and holders, a frame, words, jewellery, or a deep round, without contradicting its own piece count. Review outcome is 20 points: release, wall thickness, and whether kit resin actually set. Value is 10 points: the shelf price in GBP against a still-high score for that stated job. An empty star line, a conflicting piece count, thin letter walls, a reversed cavity, a cure failure, and an LED base with no power detail are deducted. The highest score is the top pick. The strongest price against a still-high score for a stated job is the best value. Prices and counts are the amazon.co.uk figures stored for 19 October 2026. A live review count can drift after that date.
Amazon evidence
40%Star rating on amazon.co.uk, with more weight when hundreds of UK ratings sit behind it and less when the line is missing or under about 30 ratings.
Named job
30%The listing names one job, such as coasters and holders, a frame, words, jewellery, or a deep round, without contradicting its own piece count.
Release and cure
20%Review notes on release, wall thickness, and whether kit resin actually set. Thin letter walls, a reversed cavity, and a cure failure are deducted.
Price for the job
10%Shelf price in GBP against a still-high score for the stated job. The lowest price does not win when the star line is missing or the depth is the wrong piece.
Match the cavity to one job, then match the depth to a casting resin that can cure at that thickness. A glossy, flat interior and a piece count the listing agrees with matter more than the lowest price. A food-grade line on the silicone is not a food-contact claim for the cured resin.
An epoxy resin mould, in the UK craft aisle, is the silicone cavity you pour into: coasters, holders, words, trays, frames, jewellery shapes, or a beginner kit that includes those cavities plus the liquid. Shoppers are mostly making coasters or trying a first kit. They judge a mould by glossy release, wall thickness, depth, and whether resin is already in the box. Quality shows up as a flat, unmarked interior that flexes without tearing and copies a smooth face.
Deep rounds, frames, spheres, and vases need a casting resin rated for that thickness. The ZMD listing says casting resin, not coating resin. Coating resin in a deep mould overheats.
The LET'S RESIN coaster listing says a torch or heat gun is not recommended because it may damage the moulds. Demoulding early tears thin walls. Stacking damp moulds marks the next cast.
Non-toxic on a bullet does not make a mould child-safe or food-safe. Food-grade silicone is a claim about the mould material only. A missing star line is not a clean result.
The first check is the job the cavity is shaped for. Coaster sets, word moulds, shallow trays, deep rounds, jewellery cavities, and geometric kits do not substitute for each other. A holder mould belongs with a coaster set. A word mould is three letters, not a tray. A heart frame is a keepsake, not a mug mat. Match the listing's named use before you compare the price. Depth is the second check, and it has to match the resin you will pour. Shallow coasters suit ordinary casting resin.
A glossy cavity gives a glossy cast and wears toward matte. Thin silicone, especially letter strokes, tears. Dents, scratches, and a mould that is not flat copy into every piece. The Opopark word set has reviewers describing thin walls, sticking, and letters reversed against the photo. Check the cavity against the photo before you mix. What is in the box is the next split. Mould-only sets still need resin, cups, and gloves.
Three typical situations, each with a recommendation from this comparison.
You already own casting resin and want holder moulds plus a flat cavity. The LET'S RESIN 18-piece set is the top pick: 15 coaster moulds and 3 holders at about £17.99, 4.5 from 2,399 reviews. The cover photo shows a pattern the plain moulds do not cast, and resin is not in the box.
You have no resin yet and you want jewellery-scale casts. The LET'S RESIN 500 ml kit is about £23.99, 4.5 from 3,504 reviews, with four unnamed moulds reviewers often call small. The leaflet is often safety-only, so you still need a readable mix ratio. The age line says Adult.
You want the words Love, Home, and Family, and you will compare the cavity with the photo. The Opopark set is about £7.99, 4.5 from 697 reviews. Reviewers report thin strokes, sticking, and letters reversed against the photo. Resin is not included.
The top pick is the LET'S RESIN 18-piece coaster set at about £17.99: 15 silicone coaster moulds and 3 holders, 4.5 from 2,399 amazon.co.uk reviews, and no repeated tear in the UK texts read for this note. The cover photo over-promises a pattern the plain cavities do not cast, and resin is not included. The listing says a torch or heat gun is not recommended on the mould. The best value is the ZMD six-cavity sheet at about £7.59, 4.7 from 30 reviews, with rounds listed at about 4 inches, 0.8 inch deep, and about 165 ml, for casting resin rather than coating resin. That badge holds only if a deep round is the job. Thirty ratings do not carry the same weight as a set with thousands. Prices and counts are the figures stored for 19 October 2026. This is not a laboratory test.
ZMD 6-cavity deep round mould
About £7.59 for six stated cavities at about 4 inches and 165 ml, 4.7 from 30 reviews, only if that depth is the job.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources used for this comparison. amazon.co.uk prices, stars and review counts were taken from the listings on 19 October 2026.
Expert source (DIY & tools): Charlie White (Charlie DIYte) (external profile) – public expert commentary used as a research source, not as a contributor to our pages.
This page contains affiliate links to amazon.co.uk (tag pcuk26-21). If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the listings. This is not a laboratory test.
