Very Simple! Store your cans UPSIDE DOWN. Eliminates O2 at the lid, no
rust, no film when you open it again (if any forms, it forms on the bottom!)
Told you it was simple.



What's the best way to store that 1/2 gallon of paint left over after
a project?

I don't think I've ever opened a used can that's a few months old
without finding rust along the inside lip or a film of dry paint on
top. I am very careful about cleaning the lid and the seam where the
lid seals and making sure the can is closed tight - rubber mallet
tight.

This morning I had to strain a 1/2 gallon of Kitchen & Bath paint
because of the rust that fell in when I opened the can