Isopropyl is pretty heavy duty form of alcohol. I used it a lot to clean the gunk and remove clear coat from circuit cards.
Normally... with agitation...it should do its job quickly...after it dries it will leave a film behind. You don't want to vape this.
simply clean the components in some light dish soap solution and rinse until squeaky clean.![]()
in the day we used mineral spirits to remove conformal coating from circuit boards.
isopropal alcohol is not strong enough.
using a 50/50 solution,swish it about and let sit for about 5 minuts.
blow out and place in front of a fan.it will dry completly within 2 hours or less.
this is after a good rinse using hot water.
after evaporation there will be no residue.
any traces if detectable are negligible.(harmless)
regards
mike
p.s. i still think vodka is good and i hope it does leave residue.