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Protecting bare metal


JMortensen

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I bought some MM stub axles and they have a nice anodizing on most of the surfaces, but the hub face is just exposed steel. I'm wondering what I could do to protect it a little bit. I haven't been able to come up with anything except rifle bluing. I have some cold bluing that I could use on it. I guess I'm just wanting to prevent the brake hat from corroding itself to the axle face, like the drum brakes so commonly do. Anyone have a suggestion or a recommendation for or against the bluing. I know bluing won't eliminate rust or corrosion, but I think it would slow it down a bit.

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  • 1 month later...

x2 on Anti-seize or High Temp paint. I think POR-15 makes some high temp paint. Here in Michigan I usually put some anti-seize on there to ensure the hub doesn't rust/corrode and make the rotor/wheel seal it self to the bare surfaces.

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That amsoil stuff is actually pretty good for preventing rust, considering how light it is anyway.

 

Yeah I use this all the time on my workbenches, as well as any exposed surfaces of my machine tools. Works like a charm. Haven't tried it in a hot environment (ie: near brakes) to know whether it will liquefy.

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I did some more checking and decided to leave it alone. I looked into cold bluing that I'd used on some rifle parts, and it turns out it's far inferior in terms of rust protection to hot bluing, which I don't want to get into. The one other thought I had was a dry graphite spray. If that doesn't work I guess I'll just deal with it and hope that the rotor doesn't seize to the stub axle the way the stock drums do...

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Dry graphite spray is usually just graphite particles suspended in acetone, or are you suggesting something other than that? Put a light coat of copper anti-seize on there, and it will help... works on exhaust studs, should work in that application as well.

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What about using a wear resistant paint like DuraCoat? It is a little more involved than just spray painting a part but it has been tested on firearm suppressors and has seemed to hold up to fairly high temps (500F+). Another product is called DuraHeat which is capable of going up to 1800F and cures at room temp.

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