cannabineer
Ursus marijanus
The alcohol is surprisingly persistent in the viscous residue. Varnish behaves like this. The solvent in varnish would evaporate completely (open dish, no heat) in an hour. But entrained in the varnish, it’ll take a week or longer before the thin layer of varnish is no longer tacky.Depending on your diluent you can then make an oil with significant alcohol et al contaminants if you did not vac purge. Then again this is not my terminal degree. Let's ask @cannabineer
PS If you don't vac purge I'd encourage you to do your extraction with a food grade etoh. I'm glad you enjoy the fruits of your labor.
PPS If @Metasynth ever offers you a dab just say no! LOL the time I took one I was taking 2 grams of edible a day and smoking constantly. Still 1 dab sent me catatonic for over an hour.
So, a prolonged pump-vacuum purge is a necessity, otherwise you don’t know how many % of mass are solvent dead weight.