On Sunday, I painted my front door with an oil-based paint. Went great,
looks better than expected. Didn't have time to clean the brush, so I put
it in a pail of water. Anywho, I went to clean the brush today. Now, I've
cleaned latex paint off a brush plenty of times, and it's really easy. But
with the oil-based paint, the brush never seemed to come clean. Plus it
left paint on my sink (which is ok for this particular sink). Finally
decided it wasn't worth the effort, and tossed the brush. Live & learn. :)
Many years ago, I knew of people that used to put the oil brush in water to
preserve it for a day or so if the job was not completed, to avoid cleaning
between uses. Tried it once but left it too long and the water dried up and
the brush got hard, so I don't know if it was a viable shortcut.
This may save the brush, but may also contaminate all the food in the
freezer, if any of the solvent escapes from the bag and is transferred to
the food. Poly bags are not an absolute seal, even water will transfer
through the plastic as vapor, so can solvents.
I wrap my paintbrushes - latex or alkyd - in foil and put in freezer
overnight when I have to continue a project. There is probably a great
deal LESS evaporation of volatile stuff whilst frozen than if I stand it
in a can overnight, or even clean it. Foil wraps around the brush very
closely, so whatever escapes is likely negligible.
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