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Tool Talk Discussion Forum

Rust remover with charger

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jeffcat

06-28-2007 20:08:51

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Could someone please post the site for the rust remover system using a battery charger. I thought I had saved it but didn't. Finnaly found a local little hardware store that had Lye for about $4.00 a pound. Thanks much

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SpringOverYJ

06-30-2007 06:26:02

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Re: Rust remover with charger in reply to jeffcat, 06-28-2007 20:08:51

Plain old baking soda will work also.

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Bill-KCKs

06-29-2007 11:44:31

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Re: Rust remover with charger in reply to jeffcat, 06-28-2007 20:08:51

Once again, I think two processes F-I-T used are getting mixed up.

Electrolysis uses WASHING SODA in the solution to remove rust using a dc electric current.

Lye Gravy removes paint, is a thick paste to stay put on the part. It might remove rust as a side benefit.

Lye (Sodium Hydroxide, caustic soda) is a different animal than Washing Soda (Sodium Carbonate.)

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Gary from Muleshoe

06-29-2007 11:32:13

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Re: Rust remover with charger in reply to jeffcat, 06-28-2007 20:08:51

Jeff I sent you an email, check and i can get the info to you.

Gary

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Nolan

06-29-2007 04:30:33

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Re: Rust remover with charger in reply to jeffcat, 06-28-2007 20:08:51

Do not remember my chemistry on this, but do you want to use lye? I know the formula's I've seen specified wash soda, which can be found in the laundry detergent isles of the grocery stores. It's in boxes that look just like Arm and Hammer baking soda boxes, just larger.

Can't emphasize the importance of the size of your annode. I tried with just a piece of rebar, and got lousy results. Took the advise I got here and tried again with an old sawblade. Worked well then.

Can't emphasize the importance of cleanliness enough. As rust and gunk build up on the annode, it shuts down. Clean it and it takes off again.

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bjb in Ne

06-29-2007 06:57:43

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Re: Rust remover with charger in reply to Nolan, 06-29-2007 04:30:33

You could theoretically use salt or sulfuric acid (although they might cause some problems). Pure water does not conduct electricity and tap water isn't much better. Electrolysis only works when a current between the anode cathode can be completed. Its the same process that a battery does with sulfuric acid (the acid also helps cAny solution with an ionic compound would work. One concern is to do this in a well ventilated area because hydrogen gas and oxygen are byproducts and if you overcharge the system..... .

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David - OR

06-29-2007 11:37:49

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Re: Rust remover with charger in reply to bjb in Ne, 06-29-2007 06:57:43

Amplifying bjb's comments -- any ionic solution works. Lye (sodium hydroxide) is more readily available in grocery stores than washing soda (sodium carbonate), though neither is all that hard to find. Lye is a somewhat more effective grease cutter.

The flip side is that lye is a stronger base, and thus more caustic and hazardous to handle than washing soda.

I've personally used lye and it works great. Wear eye and skin protection as you place items in the solution.

I've never tried washing soda but many "recipes" for electrolysis suggest it.

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Heat Houser

06-28-2007 20:30:47

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Re: Rust remover with charger in reply to jeffcat, 06-28-2007 20:08:51

F I T's page is under renovation so here goes.
Use about a tablespoon of lye per gallon of water, (more lye if desired) in a plastic container. Use plastic as you want the current to go through the lye/water solution. Do not use a metal container since it is difficult to keep the annode and cathode seperated. Use an old piece of steel as the annode and place it in the lye solution. More surface area is better. Place the part you want to clean into the solution taking care that it does not touch the annode. (shorts your charger if touching) Hook the red charger lead to the part you want to rust (annode) and the black lead to the part you want to clean. Use about 6 amps or so. Things that will change the amp draw: closer together, cleanliness, solution concentration, size of part and size of annode. It works kinda on "line of sight" since the current flow takes the path of least resistance which in this case is the shortest distance between the "electrodes"
After "cooking" for a day, use a high pressure washer to blast any loose paint/rust off of the part.

The easy way to remember how to hook up the charger leads is, RED to RUST

Good luck.

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rgvtx

06-28-2007 20:22:51

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Re: Rust remover with charger in reply to jeffcat, 06-28-2007 20:08:51

This site is pretty good although it doesn't have anything to do with tractor parts!
Good luck!
Link

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Ryan - WI

06-28-2007 20:14:25

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Re: Rust remover with charger in reply to jeffcat, 06-28-2007 20:08:51

I don't have the link, but the process name is electrolysis. That should pop up some topics if you search for it.

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