Originally Posted by DiabloScott

I like using these acid brushes - they're too cheap to bother trying to re-use... $10 for probably a lifetime supply.
The mineral spirits to preserve them probably costs more than they're worth, even if it worked.


Before brushes I used the "baggie on finger" method... didn't try to preserve the baggies either.
I also have a syringe thing that works great for filling in gaps.