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Rifles, Reloading, Optics, Equipment
Reloading
rust on dies
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<blockquote data-quote="P7M13" data-source="post: 2356679" data-attributes="member: 94154"><p>True copper wool (i.e. pure copper, not copper plated steel) is excellent for use in removing rust on polished or chrome surfaces like the inside of a die.</p><p>If you get the blue scotch brite pads (will not scratch) and couple them with oxalic acid (Barkeeps' Friend), this effectively removes rust too. I have used this on hook/loop on small pneumatic orbital die grinder, and while it chews through the blue scotch brites quickly, it really cleans up on rust - kind of like vibratory cleaning with a non-abrasive scrubber and chemical that dissolves rust.</p><p></p><p></p><p>I'd be willing to try this with a trashed set of RCBS dies that I have. One of my machinists used to tumble aluminum parts in a pin tumbler before we sent them off to anodizing. I was worried we'd dimensionally change these precision parts, and he demonstrated it took off less than 0.0002" total from the aluminum. The anodizing came out looking much better as a result.</p></blockquote><p></p>
[QUOTE="P7M13, post: 2356679, member: 94154"] True copper wool (i.e. pure copper, not copper plated steel) is excellent for use in removing rust on polished or chrome surfaces like the inside of a die. If you get the blue scotch brite pads (will not scratch) and couple them with oxalic acid (Barkeeps' Friend), this effectively removes rust too. I have used this on hook/loop on small pneumatic orbital die grinder, and while it chews through the blue scotch brites quickly, it really cleans up on rust - kind of like vibratory cleaning with a non-abrasive scrubber and chemical that dissolves rust. I'd be willing to try this with a trashed set of RCBS dies that I have. One of my machinists used to tumble aluminum parts in a pin tumbler before we sent them off to anodizing. I was worried we'd dimensionally change these precision parts, and he demonstrated it took off less than 0.0002" total from the aluminum. The anodizing came out looking much better as a result. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
rust on dies
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