8 Pack Thick 4 inches Resin Coaster Molds Set， 4 Pack Round Resin Silicone Coaster Molds + 4 Pack Square Coaster Mold for Resin Casting，Coaster Design

These molds are resilient, easy to use and great.

These are the best ones i used so far. Nice design on edges. Nice and thick. Sturdy and easy to clean

Was excited to try this mold. Unfortunately they arrived with marks or slight imperfections that would have transferred to resin. Sad to send back.

These molds have a much great diameter than I had anticipated. They work great and the larger coasters are great if you have a tendency towards oversized coffee cups or larger tumblers.

I really like making resin projects, so I ordered these molds to make some coasters. When I received the molds, I wasn't sure as other coaster molds I have used have a protective lip built into the mold so the coasters have a lip and drinks have a barrier to falling off. While these molds don't have that, they do work well. I used UV resin, and when they were dry, the coasters popped right off, and there was no resin residue left in the mold. I actually added small resin pieces to the top of this coaster so it is an unbreakable and waterproof soap dish for the shower.

I pick this up for something different. It was easy to use and fun without being too complicated. Not something I'd use a lot but I enjoyed it.

Epoxy is too expensive to waste on molds like these, sticks and rips worse than any other silicone mold I've used

This set is very basic but perfect for what it is. If you're looking for a simple set of coaster molds, this is it. The molds are just deep enough to do a variety of techniques, whether you're embedding items or want to try a petri style project. Perfect for beginners or more advanced artists just looking for a blank canvas.