Hi Charley,
You can spot a cat lover mile away. Thanks for the referral for the glass company. I'll take a look. Searched on Ebay and haven't found any plate glass holders. I'll keep searching. Again the process is very intriguing. Looks like you can make a batch and refrigerate it until you need it. I would like to coat a bunch and store it. I'm sure the emulsion is good for coating paper for prints.