I know it’s not the most eco-friendly of moves, but I am known to use baby wipes in my painting process. They’re not reusable, I know, but neither is a rag once I’ve clogged it up full of paint.
Anyway, the other day, I was in the middle of a knife painting and I paused to clean off some of the remnants of the paint that were still clinging to the blade.
There is something annoying about when the paint you clean off is making cooler art than the paint on your canvas.