4 Pack Big DIY Round Coaster Silicone Mold, Diameter 3.94"/10cm, Molds for Casting with Resin, Cement

These molds are of exceptional quality! They arrived in a box, so they were distortion free, and had a cardboard insert between each two, so they weren't smashed flat. The size is as stated, they have a nice sized lip to catch drips and the price was more than reasonable for the price! Great molds!

The media could not be loaded. I love these coasters. Each time I’ve used them, my work comes out beautifully!

This was my first one I made. It was east and came out perfectly the first time. It is easily removal from the epoxy.

Sturdy quality silicone molds. Resin pops out easily

I do prefer these size molds for coasters. The flat ones with no lip are just awful. You will use a decent bit of resin because these are deep. My only issue was one had a scratch on the mold and it transfers to the piece once you unmold it. I also like that it has a center reinforcement because it helps keep them level.

It was a perfect mold no scratches the resin pour was great

Great size and great prize. Currently using to make cup coaster with epoxy!!

I am glad I got these first before other coasters molds. These are thick.. have no problem using the flame from my little torch. It is a lip edging to hold the condensation from drinks and surely could be used for other types of projects. I have seen how other molds do not stand up to the heat.. they rip.. and only come in packs of 3.. who buys 3 coasters? Lol