Do any of you use frekote on glass? If so do you just spray it on the clean glass surface without wax? And after a few parts go threw the mold and the frekote was sprayed every time, does it build up a layer so I wont have to spray or put a release on every time?
Thanks and sorry for my ignorance. 
Where would I even find one and how much are they?
I did look at aluminum plates from them, but I was looking at 1/2+ thickness so the price scared me away. I did not know you could use this thin of plate. Does anyone know where to find one that is at least 4’ x 6’ now? because I see mcmasters is only 24x24"