Coud someone experienced in safe glass cutting take an iPad screen protector 0.3mm tempered glass, peel off the plastic coating (blow-dryer and gloves), and cut to size to make a super-thin glass plate for coating? One could find the cheap ones on eBay or discount store.
I don’t coat my own emulsion coating so I wonder - will this fit in a standard sized film holder? What if the glass were even a bit thinner—they are out there!
Cut tempered glass:
https://m.wikihow.com/Cut-Tempered-Glass
Screen protectors - 2 for $8.50:
https://www.ebay.com/itm/2-Pack-Temp...-/111970821244
Update: After removing plastic protective film, I cleaned my glass with Goof Off spray and lab wipes, then lens cleaner and Harbor Freight micro-fiber cloth. Now pristine!
Disclaimer: this process can cut and or blind you. It is not recommended that you cut tempered glass. Proceed at your own peril. First consult a professional, and wear safety gear from head to toe and eyes, plus cut-proof gloves that cover your wrists.
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