2 Pack Large Hollow Hexagon Coaster Resin Molds, Art Silicone Resin Molds, Including Inner Triangle and Stripe Mold for Coaster, Beverage Coaster and Bowl Mat

Haven't had time to use them yet, but in comparison to some of the other molds I've, they seem very sturdy. I've not had to prop up the sides while they are waiting for the temperature to come up so that it's warm enough to use them. I certainly don't expect a problem with them when I can use them, but if I have a problem, I will edit my review. They came quickly, and in good condition.

Really cool but too big to be considered a coaster. I wish it were about 2” smaller. But the mold itself is awesome. Be sure your resin has completed cured or the mold will tear. It was very difficult to de-mold the coaster. Took me a long time and the resin chipped in one place. But overall it’s a great mold.

I am only giving these molds three stars because the geometric mold tore on my first molding. The triangle mold is still working after using it ten times. I would be careful pouring the resin into these molds. I think the resin stuck on the stripe mold because I poured the resin on the top of the stripes.

Loving these large hexagon coaster molds!! Used one time so far, seem sold!! (Just don’t rip it out of the mold, be gentle.)

Customer service was great & worked with me to resolve a replacement of a resin mold. Satisfied Customer!!!

Extra large is a better way to describe these "coasters". They're huge!

I received the resin molds in a timely manner and they are just what I was looking for!

I was trying to make resin coasters with these molds.