Quote:
Originally Posted by Mad Mac
How do you get light light surface rust from gear cogs without damaging the hardening? Is bead-blasting OK?
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With cogs/gears in place on machine:
I use an assortment of brass brushes, both hand and drill driven. No damage that way. After cleaning that way, I apply a rust converter and after that I apply a lube. Not a speedy method, but effective.
If you are in a hurry, you can remove gears and develop a safe process.