I don't know if anyone has tried this before, so maybe it's not new...but it's something I discovered today. I was having a heck of a time getting a good laser print on parchment paper to transfer using the damar varnish mixture. So I tried spraying a light coat of hairspray on the parchment paper prior to printing and dried it with a hair dryer. I got a WAY better print and transfer. The first pic is the print on parchment and the second is the transfer onto a 2 x 2 practice plate using darmar varnish.