Saxophone repairman Matt Stohrer of http://www.StohrerMusic.com gets you up close to the action as he makes a stick of shellac in real time. You’ll want to watch it again, and again, and again! If you are into self-harm, that is.
Video about how shellac is made: https://www.youtube.com/watch?v=lQcQ0yuekZ0
Neato bonus video about making shellac records from way back in the day: https://www.youtube.com/watch?v=qZ5PQSaDYgU
You want dewaxed shellac flakes, like the stuff here: http://www.ferreestoolsinc.com/collections/woodwinds-tools/products/g61-flake_shellac?variant=1107211252