[Joanne]

Hi,
I just poured resin into the two square coaster molds I recently purchased from you. Both pieces ended up with spots on the top that were like shallow holes with no resin. I put sealed stickers in both and thought I got rid of any bubbles. Why would this happen? It’s odd that it happened to both of them! Thank you

[Katherine Swift]

It sounds like there were bubbles that formed that popped while the resin was curing. The resin wasn’t fluid enough to fill in the voids.

What kind/brand of resin did you use? How much did you mix?

[Joanne]

I was using Clearcast 7050. I was making two square molds and mixed 2 oz. I rubbed the stick across the sticker to make sure I didn’t have bubbles underneath.

Would I be better off first laying down a thin layer of resin and then later adding the sticker and more resin? But how would I be able to make sure there weren’t bubbles under the sticker? If I pressed down, I could mess up the first layer which isn’t fully cured? I really am not sure how to proceed. Thank you.

[Katherine Swift]

Try dipping the sticker in your resin cup before placing it in your mold. This relieves the surface tension and makes it less likely you will trap bubbles.

[Author]

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