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Dave wrote:
Or the pan bolts that run through and are coated with paint, sealant, contacting an anodized plate, etc...
An anodized plate is probably a bad idea. Anodizing oxidizes the surface layer of the aluminum, converting it to a brittle ceramic. The unavoidable vibrations in the base material will create microscopic cracks that creates stress risers that can then propagate. I was skeptical when I first heard this, but then was presented with evidence that demonstrated a 20% decrease in reliability with anodized aluminum components.
I had my bed plate, PSRU mount plate and several other components nickel plated. As a bonus, the bright nickel finish looks like chrome. 8*)
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