That's a good find Henry! Thank you for the link. By the way, if you have not seen it, check the substrate thread here:

Quote Originally Posted by hgernhardt View Post
The lead I was looking for. As a result, I wound up finding rolls of acetate film here in what appear to be fairly common film widths. Also, I was able to find multiple sources of 20" and 40" wide clear polyester film in various lengths and thicknesses (from 1 to 7 mils). An example is here.

If I had the time, space, and disposable income, I'd be all about getting some coating on. Good luck in your endeavors! Oh, and when you do get your production line ready to roll, let me know. I'd love to assist in testing—as long as I can get my old Rexo refurbished.
Heh, if I ever get to that point, I will certainly send you a roll to try