researching

reserarching

I am new to glass fusing and hae been trying out different pieces of glass to make pendants. Using the ripple glass I am having an issue. What's happening is the ripple glass seems to be slipping out fromthe clear glass on top -- most of it covers well but the sides or top seem to pop out of the clear glass even though they are the same size or even sometimes a bit larger. Any tips on this? Does the thickness of the clear glass matter? Kate