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Yellowing Prevention

by HomesteadWoodwright
posted 12-12-2018 03:52 PM


4 replies so far

View OSU55's profile (online now)

OSU55

2298 posts in 2375 days


#1 posted 12-12-2018 04:02 PM

Any shellac will yellow the white paint at least some. I have the lightest color available, platina, and its a bit yellow. A good paint is all you need (dont know about the stuff you used). If you still want a clear coat, GF hp poly or Target em9000 are water clear waterbased poly’s. No oil or solvent base finish (except some industrial types) will cure water clear – all have some yellowing.

View LesB's profile

LesB

2089 posts in 3828 days


#2 posted 12-12-2018 06:25 PM

I don’t think those “craft” paints are very durable so….
I vote for top coating with a clear water based polyurethane. Two or three coats. Watch for runs if you brush it on.
Second choice would be a spray on enamel (the shaker can type).

-- Les B, Oregon

View Rich's profile (online now)

Rich

4475 posts in 975 days


#3 posted 12-12-2018 07:15 PM

CAB lacquer from Sherwin Williams is a solvent based finish that dries clear and does not yellow.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View Phil32's profile

Phil32

538 posts in 289 days


#4 posted 12-12-2018 08:46 PM

When you put a clear finish over paint you have to consider the possible changes (yellowing) of both the finish and the paint. When I worked for NASA we spent a lot of money for a “non-yellowing titanium white paint” to use on spacecraft to be landed on the moon. Then Apollo 12 landed close enough to one of the landers to check out the changes after 2-1/2 years. The paint had turned tan.

Your rocking horse may not be in such a hostile environment, but it WILL likely change color over time.

-- Phil Allin - There are mountain climbers and people who talk about climbing mountains. The climbers have "selfies" at the summit!

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