Use them for small jobs where you are using oil based paint. Use once
and throw away. Cheaper than cleaning with paint thinner that's now
about $6/gallon. Perfectly good for big jobs for the primer coat.
When I'm working with alkyd and brush (real, good bristle brush) or
spray, I keep a cheapo foam brush handy to catch runs and drips.
Especially with sprayer, a brush already wrung out with mineral spirits
will catch drips before the set and it leaves a smoothe coat of paint.
I spray painted my old klunker range hood with enamel and the foam brush
was very handy. Looks like new, unfortunately :o)
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