How come I can't use a heat tool for popping bubbles?

I think they are just afraid it will melt the mold. I still use a heat gun and haven't had any issues.

Is a release agent needed prior to use?

I didn`t need anything to take them out of the molds. I'm guessing using a release agent will make them easier to release.

Can anyone tell me if there is any deformation after receiving the molds?

No, they are well packed in the box without any deformation and the surface of the mold is smooth.

How do you remove air bubbles in the resin if you can’t use a heat gun or torch?

Use 91% alcohol. It pops bubbles. Also you’ll have less bubble if you set your resin In warm water for about 10/15mins before mixing it. I either sit my bottles in a sink of warm water or I set my poured cups in a bowl of war water. DO NOT HET WATER IN YOUR RESIN. Hope this helps.

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Coasters Resin Mold Silicone Coaster Mold Round Square Octagon Holder Mold for Epoxy DIY Art Craft Cup Mat

Product ID: 740316679

Details

Brand
LET'S RESIN
Color
18pcs
Item dimensions L x W x H
8 x 8 x 6 cm
Material
Silicone
Shape
Square

🟠18-piece versatile set

🧩3 unique shapes: round, square, octagon

🧼Premium flexible silicone, easy clean

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VT15173

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎨 Mold your masterpiece, sip in style!

SHAPE YOUR STYLE - Round, square, and octagon molds let you craft coasters that match any vibe
PRO GRADE SILICONE - Flexible, reusable, and glossy interior ensures flawless resin finishes every time
MULTI RESIN COMPATIBLE - Works seamlessly with epoxy, UV, polyurethane, plaster & more—no torch needed
ALL IN ONE CREATIVE KIT - 15 coaster molds + 3 stylish holders for endless design combos
PERFECT GIFT PARTY ESSENTIAL - Create personalized coasters for housewarmings, holidays, or large gatherings

LET'S RESIN 18 PCS Silicone Coaster Resin Mold set includes 15 molds in round, square, and octagon shapes plus 3 matching holders. Made from premium flexible silicone with a glossy interior, it supports multiple resin types for easy, professional-quality coaster crafting. Ideal for DIY enthusiasts and pros alike, this versatile kit enables creative home decor and personalized gifts.

Specifications

ASIN	B0BKZ6ZH2S
Amazon Bestseller	#688,249 in Hobbies ( See Top 100 in Hobbies ) #6,097 in Jewelry Resin Casting Molds
Brand Name	LET'S RESIN
Color	18pcs
Customer Reviews	4.6 4.6 out of 5 stars (2,058)
Item Dimensions	8 x 8 x 6 cm
Item Type Name	Coasters
Manufacturer	LET'S RESIN
Manufacturer Part Number	ELR00207
Material Type	Silicone
Model Number	ELR00207
Number of Pieces	18
Shape	Square
Unit Count	18.0 Count

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