Ive used Acetone on my Form1 prints and for future reference it does the same job as IPA, just a bit more toxic. I use a fine sable brush with the Acetone but to be honest its really not worth it as there is a bit of skill involved. Acetone needs to be used in tiny quantities and brushed while wet, but acetone evaporates very quickly when your brushing so when it dries out you end up brushing tacky SLA resin which destroys the fine details and surface. Give it a go by all means but get really good quality soft brushes with medium to long bristles and hone your skills on some parts that don’t matter. Generally, I dip the brush in, give it a couple of passes and then dip again and carry on.