I really enjoyed making my pyramid... although the temps in Texas were over 80° I thought it wouldn't cure right... but I loved my results. I used treadmill silicone and sprayed and wiped the inside of the mold before pouring and it came out with ease. Absolutely recommend this mold.

So perfect! I had an old one that left bubbles but the wooden structure it comes with is exactly what you need. It came out so nicely and perfect smooth shape. It is thin so I added another layer of resin on the inside of the tray

I’ve made several sets of coasters with these moldings.
I like that it has an extra little tab that you can grab onto if you want to move/slide it to another location to cure.
The coasters fit perfectly into the holder slots.
Seems like these will last a while as long as you take care of them.