Very new to glass fusing! Have watched hours of YouTube and even Googled, but can’t find answer. Right now using a microwave kiln. So far not had any major issues, except when I try use frit. Every time I use it, the base changes shape!
1/2” by 1” 90 coe
Also tried on Bullseyes glass
Capped and un capped
Each time every where there is frit, the base piece shrinks! My rectangle ends up looking like a dog bone.
Frit size is small but not powder.
I know there is a simple answer, but I just can’t find it! Also know the microwave kiln, isn’t ideal. However only days into this new hobby, and trying to get my feet wet. BTW do understand the basic concepts. Did ceramics professionally back 30 years ago.