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How To Do an Oxalic Acid Bath  RSS Feed

#51 2011-09-08 7:23pm

MR.Grimm
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From: New Hampshire
Registered: 2010-08-18
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Re: How To Do an Oxalic Acid Bath

crap... sorry, I was sharing the link to this page with a friend, and I stupidly forgot I didn't copy the picture hmm
http://i1141.photobucket.com/albums/n591/Grimmspankah/Vintage%20BMX%20bikes/ross_4_copy0_blowup.jpg


New bikes are nothing compared to the way they were made back in the day....
))Looking for a stock 1985 Ross Piranha crank set message me if you have details, thank you!((

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#52 2011-09-08 7:31pm

Skwerly
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From: Yucaipa, CA
Registered: 2011-05-02
Posts: 855
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Re: How To Do an Oxalic Acid Bath

believe it or not, those little toothbrush-sized copper wire brushes does a real good job in the tough-to-reach spots.  i used one like this on my haro:

http://www.sz-wholesale.com/uploadFiles/Copper%20Wire%20Brush_645.gif


Looking for GT Performer forks - maybe.  Lemme know what you have!

V-bars, knobby tires, and chain guards - Oh, yeah!  big_smile

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#53 2011-09-09 4:38am

MR.Grimm
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From: New Hampshire
Registered: 2010-08-18
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Re: How To Do an Oxalic Acid Bath

^ scratch your chrome much?


New bikes are nothing compared to the way they were made back in the day....
))Looking for a stock 1985 Ross Piranha crank set message me if you have details, thank you!((

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#54 2011-09-09 10:01am

Skwerly
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From: Yucaipa, CA
Registered: 2011-05-02
Posts: 855
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Re: How To Do an Oxalic Acid Bath

nah, the copper stuff is real, real flimsy.  but, it does do the trick with surface rust.


Looking for GT Performer forks - maybe.  Lemme know what you have!

V-bars, knobby tires, and chain guards - Oh, yeah!  big_smile

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#55 2011-09-16 6:16am

tobin
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Registered: 2010-03-01
Posts: 701
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Re: How To Do an Oxalic Acid Bath

By any chance, does anybody know if Oxylic Acid will dissolve latex, silicone sealant or grease? I'm going to be soaking a pair of RL-20II forks and I'm going to be using the above mentioned materials to seal the forks before soaking them.

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#56 2011-09-16 7:23am

Monster-Robot
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From: Carthage, MO
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Posts: 1635
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Re: How To Do an Oxalic Acid Bath

tobin wrote:

By any chance, does anybody know if Oxylic Acid will dissolve latex, silicone sealant or grease? I'm going to be soaking a pair of RL-20II forks and I'm going to be using the above mentioned materials to seal the forks before soaking them.

No it won't dissolve the mentioned materials.

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#57 2011-09-16 7:44am

tobin
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Re: How To Do an Oxalic Acid Bath

Monster-Robot wrote:

tobin wrote:

By any chance, does anybody know if Oxylic Acid will dissolve latex, silicone sealant or grease? I'm going to be soaking a pair of RL-20II forks and I'm going to be using the above mentioned materials to seal the forks before soaking them.

No it won't dissolve the mentioned materials.

Excellent, thanks for the response.

Last edited by tobin (2011-09-16 12:11pm)

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#58 2011-09-24 11:21pm

poppalung
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From: Deptford, NJ
Registered: 2010-09-17
Posts: 263
Bikes: 6

Re: How To Do an Oxalic Acid Bath

what about painted parts i have a set of handle bars that are powered black and rusty in the normal spots. will the OA bath affect the paint???  hmm


\m/BMX\m/

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#59 2011-09-26 3:37pm

MrSlayer
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From: Macomb, MI
Registered: 2011-07-29
Posts: 32
Bikes: 2
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Re: How To Do an Oxalic Acid Bath

While you're at the store, pick up a new hose.

Just kidding.  This was a great read, and I think I'm going to try it on my '88 Performer project.

Great article.


10 01 11

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#60 2011-09-26 4:15pm

cmb
Pro MemberTexan by birth, Scottish by drink
From: Texas
Registered: 2010-07-14
Posts: 3391
Bikes: 8

Re: How To Do an Oxalic Acid Bath

lol

I laughed at the wife whenever I went out and saw the hose after her "fix".  I told her she was officially a Redneck because she tried fixing a waterhose with duct tape.


Just your typical Aggie Hutch owner. Gig'em.

Never trust a man that doesn't know what beer tastes like or wears more than two rings.

I usually edit for my grammar mistakes.

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#61 2011-09-26 4:21pm

Skwerly
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From: Yucaipa, CA
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Re: How To Do an Oxalic Acid Bath

OA bath wont' affect paint or stickers.


Looking for GT Performer forks - maybe.  Lemme know what you have!

V-bars, knobby tires, and chain guards - Oh, yeah!  big_smile

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#62 2011-09-26 4:47pm

snooze
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From: London, UK
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Re: How To Do an Oxalic Acid Bath

Brilliant gotta try this on some of my old bits


Snooze * Wake up * Get busy

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#63 2011-09-26 4:51pm

mongoosefreak
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Registered: 2010-03-05
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Re: How To Do an Oxalic Acid Bath

cool

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#64 2011-09-27 5:47am

tobin
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From: Northeast
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Re: How To Do an Oxalic Acid Bath

I just wanted to give a HUGE thanks to CMB for composing this how-to post. It was extremely helpful, and I was able to bring a rusty old RL20-II fork back to life. I'll let the pictures speak for themselves.

BEFORE
http://i178.photobucket.com/albums/w261/tobin944/Skyway%20grabber/100_0889.jpg

AFTER (~16 hours in the bath)
http://i178.photobucket.com/albums/w261/tobin944/Skyway%20grabber/100_0894.jpg

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#65 2011-09-27 1:37pm

Skwerly
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From: Yucaipa, CA
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Re: How To Do an Oxalic Acid Bath

WOW, those turned out really, really nice!


Looking for GT Performer forks - maybe.  Lemme know what you have!

V-bars, knobby tires, and chain guards - Oh, yeah!  big_smile

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#66 2011-09-27 6:12pm

MR.Grimm
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From: New Hampshire
Registered: 2010-08-18
Posts: 124
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Re: How To Do an Oxalic Acid Bath

will this bath take out any swirls in the chrome?


New bikes are nothing compared to the way they were made back in the day....
))Looking for a stock 1985 Ross Piranha crank set message me if you have details, thank you!((

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#67 2011-09-27 7:38pm

cmb
Pro MemberTexan by birth, Scottish by drink
From: Texas
Registered: 2010-07-14
Posts: 3391
Bikes: 8

Re: How To Do an Oxalic Acid Bath

Great job tobin, those forks turned out awesome!  Have you used any polish on them yet?



Mr. Grimm, OA removes rust.  I'm not sure what caused your swirl marks.  If they are from steel wool or some other mild abrasive, then no.  I would say only a polishing compound then a metal polish would take the swirls away.  Of course, as has been said on many a posts, pics would help.


Just your typical Aggie Hutch owner. Gig'em.

Never trust a man that doesn't know what beer tastes like or wears more than two rings.

I usually edit for my grammar mistakes.

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#68 2011-09-28 7:11pm

MR.Grimm
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From: New Hampshire
Registered: 2010-08-18
Posts: 124
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Re: How To Do an Oxalic Acid Bath

this is what im talking about.. its got swirls and stoof...sad
http://i1141.photobucket.com/albums/n591/Grimmspankah/Vintage%20BMX%20bikes/100_1849.jpg

http://i1141.photobucket.com/albums/n591/Grimmspankah/Vintage%20BMX%20bikes/100_1851.jpg


New bikes are nothing compared to the way they were made back in the day....
))Looking for a stock 1985 Ross Piranha crank set message me if you have details, thank you!((

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#69 2011-09-28 7:25pm

Skwerly
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From: Yucaipa, CA
Registered: 2011-05-02
Posts: 855
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Re: How To Do an Oxalic Acid Bath

That looks like a polishing job.  The OA won't touch that.


Looking for GT Performer forks - maybe.  Lemme know what you have!

V-bars, knobby tires, and chain guards - Oh, yeah!  big_smile

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#70 2011-09-28 7:32pm

amplive
Centurion Member
From: Pacific NW
Registered: 2011-07-22
Posts: 182

Re: How To Do an Oxalic Acid Bath

How does this compare to CAP price wise?


Looking for: 1993-94 Boss Bad Boy Pro XL

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#71 2011-09-28 7:38pm

vt102
Museum Addict
From: Oahu, HI
Registered: 2009-09-15
Posts: 1043
Bikes: 5

Re: How To Do an Oxalic Acid Bath

MR.Grimm wrote:

this is what im talking about.. its got swirls and stoof...sad
http://i1141.photobucket.com/albums/n59 … 0_1849.jpg

http://i1141.photobucket.com/albums/n59 … 0_1851.jpg

Check this thread here. Looks like you have to buff out the scratches.

http://bmxmuseum.com/forums/viewtopic.php?id=292792

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#72 2011-10-03 4:55pm

mlacasse1
Member
Registered: 2011-09-21
Posts: 30

Re: How To Do an Oxalic Acid Bath

Just finished OA bath on this kuwahara.  After the parts were done soaking, i rinsed them off, and used "Barkeepers Friend" stainless/chrome powder polish (in ajax type thing) and a toothbrush, little water along all the welds and hard to reach areas to remove the rust.  Worked awesome.

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#73 2011-10-03 8:09pm

mongoose4ever
Museum Newbie
Registered: 2011-10-01
Posts: 9

Re: How To Do an Oxalic Acid Bath

When you say that the bike 'must be in a controlled enviroment or the rust will return' are you refering to keeping it indoors at all times? I am restoring my '83 Blue Max I had as a kid for my son, and after seeing these results I am tempted to try it. But I want my son to be able to ride it....It will not be left out in the rain, but if he does get it wet am I back at square one?

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#74 2011-10-03 8:28pm

cmb
Pro MemberTexan by birth, Scottish by drink
From: Texas
Registered: 2010-07-14
Posts: 3391
Bikes: 8

Re: How To Do an Oxalic Acid Bath

mongoose4ever wrote:

When you say that the bike 'must be in a controlled enviroment or the rust will return' are you refering to keeping it indoors at all times? I am restoring my '83 Blue Max I had as a kid for my son, and after seeing these results I am tempted to try it. But I want my son to be able to ride it....It will not be left out in the rain, but if he does get it wet am I back at square one?

No, you wouldn't be back to square one if the bike gets wet.  What I meant by the controlled environment comment is that a person can't leave their bike in a shed or other area where moisture in the air is uncontrolled after an OA bath and expect the rust to not return.  Using a neutral ph metal polish and an occasional wipe down of the bike with a soft dry cloth will go a long way to preventing rust.   I sometimes get caught in the rain.  I just wipe my bike down and use an air hose to blow it off when I get home.

Last edited by cmb (2011-10-04 5:44pm)


Just your typical Aggie Hutch owner. Gig'em.

Never trust a man that doesn't know what beer tastes like or wears more than two rings.

I usually edit for my grammar mistakes.

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#75 2011-10-04 1:37pm

luker
Intermediate
From: EASTCOAST
Registered: 2011-08-25
Posts: 282

Re: How To Do an Oxalic Acid Bath

If anyone sees this soon, please comment on possible options for chrome surface protection after the bath is done and the frame is dry.

In the pic with the chrome frame and VOC decal, you can still see some fine pitting on the surface, which is fine, but those areas will turn right back to rust spots again without protection?

im thinking especially if the bike is left outside, or in any humidity. (hot or cold ) -

like my  'chrome' bath fixtures (whatever they'e made of) they have a bit of rust-I  can clean and polish the fixture but the rust isnt buffed out/sealed, and the rust comes back from being wet or from humidity.

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