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Originally posted by Bented
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The odd thing is that I only rarely have any issues with corrosion other than some special cases. This is one of those apparently. Nothing else near to the bench block suffers from any sort of rusting. So I'm inclined to lean on reggie_obe's earlier call of something gassing out from the old pad and causing the issue.
Chilliwack BC, Canada -
Put something else
steel on the pad
see if it rusts too.
-DD
ZERComment
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Lead is indeed a good thought for damping.
Same thing as any other material, though, for wicking. That's if there is ever water there, such as from condensation, or dripping soluble oil, etc. Must be water there, if you find rust.
Maybe get the luan to soak up some oil?CNC machines only go through the motions.
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Generalizations are understood to be "often" true, but not true in every case.Comment
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I do in fact get corrosion from the water soluble oil on the mill and even drill press if it gets trapped in a way that prevents the water being able to evaporate. For that reason I took to using a coating of the heavy thick lathe and mill way oil on the bottom of the vise before seating it. The fairly thick stuff stopped the soluble oil wicking between and causing certain rust.Originally posted by J Tiers View Post
But I don't use that stuff around the bench block.
While I think sheet lead would work well I don't have any and have no idea where to find it easily. So I'll run with the UHMW PE for now. If I get more rust then I'll give a well treated bit of the luan plywood a try.
And for giggles I think I'll put a piece of clean degreased steel on that old rubber and see what happens. But in all these cases we're looking at some weeks out before there's any final answers.Chilliwack BC, CanadaComment
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I would glue the smooth side of the rubber to the underside of the plate and forget about corrosion.Comment
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