Sappy Rosin Collection

I have some very sappy rosin that's a pain in the ass to collect. Would a 1"x8"x8" piece of frozen aluminum do the trick? Maybe attach the parchment to the metal with some kind of clip attempting to keep it nice and close to the metal. I don't have the aluminm handy but I could get some.

Vac chamber just a bit higher than room temp. Check after a few hours, but it may take longer.

put it on top of something frozen like a tv dinner and scrape up. let sit out to dry.