painters!!! rubbing alcohol as prep cleaner??

Louie I like the MEK a lot also for the reason you mentioned, no residue.
Everything I have pointed out here I have learned from trial and error no real formal training
or anything like that. I have found if you know what the base solvent of the materials you are working with it can prevent a lot of problems. Some brands are not good at labeling their cans
and doesn't make this easy for us. I have had some real chemical clashes over the years that were just plain surprising and weird.lol.
I pretty much follow the recipe on the cans for the modern epoxies and urethanes that are used today. Paint cost to much now days for me to take the chance of mixing in something old I have in the cabinet and something going south.