I cut mine on the bandsaw at about 1/8". I eye ball it..
Then figure my overall stack.. say .255. Then subtract the glass.. black - .030, so .060. That leaves .195.. divide by 2 or 3.. .0975 or .065. I would go with 3 .065's because they seem to bend and form better.
I find if I cut at about 1/8".. I have the flexability to do what I need to do. Sometimes a little more grinding is needed, but that is the way it goes.