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Old 09-08-2020, 08:08 PM   #107
78F350
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Join Date: Jul 2014
Location: Oklahoma
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Quote:
Originally Posted by blue62 View Post
...
You can anneal aluminum washers.
blacken with a magic marker.
heat just until the magic marker burns off.
Air cool room temp.

Working copper or aluminum work hardens both.
To the point where they become brittle and crack.
Annealing them takes both back to there normal malleable state

There are times when you just can't buy what your looking for.
maybe a washer of a certain size and thickness.
Today I changed the oil in my wife's Honda Element. Rather than using a new crush washer I annealed the old one because of this thread. Now I'm going go outside with a flashlight and check for a leak because of this thread.
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