REVscene Automotive Forum - Non destructive rust removal?

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Non destructive rust removal?

We got some pretty bad rust on our CNC gantries that we need rust removal from.
http://i45.tinypic.com/2zgxdz5.jpg
Similar to that, but a lot more rustier.

Anyone have any ideas on how to remove it non-destructively?

-Rich

Electrolysis
Posted via RS Mobile

Quote:

Originally Posted by saveth (Post 8404630)

Electrolysis
Posted via RS Mobile

Know of any reputable companies in Vancouver that do this?

Quote:

Originally Posted by BoostedBB6 (Post 8404633)

CLR?

We've tried that and its not very effective. Its difficult to get a full soak on machine gantries. =(

Coke
Oxalic Acid Crystals with water
deox-C from B & H
Evaporust I've hear good stories about.

I think my dad used LPS on his machines and I think it did some decent protecting.

Electrolysis is great but CNC Gantries can be pretty big right? You're going to need a big tub lol

Quote:

Know of any reputable companies in Vancouver that do this?

www.redi-strip.com/index.htm

I think my dad's old boss used to outsource work to them.
Couldn't tell you if they're good or not though

I've read that Amsoil Metal Protector works but haven't tried it myself.

Used evaporust on some cam gears and worked okay. Still had some rust, but most of it was gone. Problem is you need to submerge the whole part in it for a day or so, then scrub it off using scotch-brite pad or something.

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Originally Posted by k3mps (Post 8404645)

Talked to redistrip, they want us to disassemble our CNC and bring it to their shop :fuckthatshit:

Quote:

Originally Posted by Speed2K (Post 8404716)

I've read that Amsoil Metal Protector works but haven't tried it myself.

Yeah once we clean it off we'll probably protect it with something like this! Thanks!

Quote:

Originally Posted by slow-fastback (Post 8404722)

Ill give evaporust a try, maybe ill soak a rag and leave it on the gantry overnight or something. Or maybe build a temporary tank/trench to soak it overnight somehow.

In the future, consider building a circuit with the gantry and use a more active material from the galvanic scale to act as a sacrificial anode, your gantry will never rust again.

If you're not familiar with any of this, just google "galvanic corrosion" and "sacrificial anode" you will understand, it's simple.

Have you figured out what caused the rust? debris or is it the gantry itself? If it is debris, sounds like you need more frequent cleaning.

Biorust. You'll need to soak the gantries somehow with it.

You can try using naval jelly. Pour or brush it on, takes about an hour. You can do multiple coats and it's non-toxic. I use it for cleaning up old motorbike parts. It converts the rust into a black surface.

It's about $6 for a small bottle. You can get it at most of the hardware stores and lordco.

Lemon Juice and then baking soda, Mix it together until it is the consistency of tooth paste, then cake that stuff on, leave it caked on for a few hours, come back later and rub/wipe off, maybe use a vinyl brush on it. It should wipe right off.

This works for me every time :)

clean it with a brass brush and mild solvent then relube it