Stripping anodize...

[RIPPEN]

I got a piece I need to strip the anodizing off of.. I hear they make a stripper for it.. I hear it can be sanded/buffed out.. Also hear there are some other, more simple methods..

 

So Iam curious whats the best and fastest way to strip anodize off?

 

Thanks,

RIPPEN

[theshee]

I got a piece I need to strip the anodizing off of.. I hear they make a stripper for it.. I hear it can be sanded/buffed out.. Also hear there are some other, more simple methods..

 

So Iam curious whats the best and fastest way to strip anodize off?

 

Thanks,

RIPPEN

 

 

Right here Jamey-

http://www.eastwoodco.com/jump.jsp?itemID=...temType=PRODUCT

 

like I said, I tried to polish my exhasut clamps off but the anodizing was too much work to buff off. I think for 20 bucks this is the wya to go... :thumbsup:

[Bansh-eman]

i found this online for it, i know anodized metals cant be removed like paint becsue its a TOTALLY differant process that makes metal takes on the color.

 

"There are 2 way to accomplish the removal of the anodic coating from aluminum depending on the surface you want to end up with. A NaOH etch solution will remove the coating but will etch the surface leaving a diffuse (matte) appearance. The chromic acid/phosphoric acid solution used in the Acid Dissolution Test ASTM - 137 will remove the anodic coating without affecting the underlying surface. The composition of that bath is 80 grams of chromic acid in 3.5 liters of water, add 140 ml of 85% phosphoric acid, add water to make 4 liters. The bath is operated at 190 - 200 deg. F. Immerse the part for 15 minutes and then rinse well in water."

 

i also read that over cleaner may do it. Anodizing is no joke. do you plan to re ano it?

Edited March 10, 2008 by Bansh-eman

[Twistedtrik]

Easy-Off oven cleaner. Have used it to remove anodizing for years. Use the fume free if doing it indoors.

[Fireroad Express]

the stripper is the fastest way to remove an anodized layer. if there happens to be paint or some other coating on the anodized surface, it must be stripped off completely before the anodized piece is placed in the anodize stripping bath. it will strip all the anodizing off except for whats under the paint. what a mess. also try not to breathe in the fumes/mist that rises off the heated stripper solution. trust me, it is bad shit! get a respirator!

[RIPPEN]

Right here Jamey-

http://www.eastwoodco.com/jump.jsp?itemID=...temType=PRODUCT

 

like I said, I tried to polish my exhasut clamps off but the anodizing was too much work to buff off. I think for 20 bucks this is the wya to go... :thumbsup:

Yeah bro, the only reason I was wondering what else was out there, is Kevin was saying he has heard of guys even using some sortta solution made up of like water, baking soda and something else that will strip it.. So being at that, if I can get away without having to order something special, thought I would try that.. Otherwise I know you know your shit and thats probably what we will end up doing but after hearing different methods, I figured I would see whatelse was out there.

 

i found this online for it, i know anodized metals cant be removed like paint becsue its a TOTALLY differant process that makes metal takes on the color.

 

"There are 2 way to accomplish the removal of the anodic coating from aluminum depending on the surface you want to end up with. A NaOH etch solution will remove the coating but will etch the surface leaving a diffuse (matte) appearance. The chromic acid/phosphoric acid solution used in the Acid Dissolution Test ASTM - 137 will remove the anodic coating without affecting the underlying surface. The composition of that bath is 80 grams of chromic acid in 3.5 liters of water, add 140 ml of 85% phosphoric acid, add water to make 4 liters. The bath is operated at 190 - 200 deg. F. Immerse the part for 15 minutes and then rinse well in water."

 

i also read that over cleaner may do it. Anodizing is no joke. do you plan to re ano it?

Want to leave it stripped.. The brushed look or polished would be fine.. I was thinking, hoping and told by some guys on here that it CAN be removed like paint.. Even seen a spot on it where is was rubbed and the ano was gone... Thus making me think it maybe possible.. But Kiel is basicly a expert on this sorrta thing and being that he says its not practical or able to be done, I trust him..

 

Again, just figured there would be more than one way to skin a cat so I was wondering what someone that has ano experience would recomend.. Thanks for the input fellas!

 

RIPPEN

[Bansh-eman]

its not like paint, if the metal gets dinged or scratch it will show the raw metal under it but its nothing like paint. we use it on paintball guns and barrels

[Fireroad Express]

anodizing is basically a hardened microscopic film of hollow tubes standing at a 90 degree angle to the surface it is on. the hollow "tubes" suck up dye by capillary action. this how anodize can "take on a color" the part is then put into a boiling tank of sealing solution to keep the dye from seeping back out of the tubes. under a microscope these tubes are shaped like an octagon. i used to anodize a few paintball guns and miscellaneous parts. i'm still waiting for my shop to be finished and my gear is still in storage. i wouldn't even think of seting this up in the house. the electrolyte used in the process is hot hydrochloric acid cut with water. real nasty fumes off this too! it will singe your nose hair. good ventiation is a must!

[atvfreestylekid]

Easy-off oven cleaner is the best way to do it. It works great. I did it to all of my blue aluminum parts on my rc trucks. anodizing is so easy to scratch. I hate it. Looks great until somthing bumps it. Anyway, just go to walmart and get some easy off for like $4. Just don't leave it on the metal too long or it may burn it. But it takes a while to do that. once the easy off is on it, you will see the anodizing start to come off, just wipe the stuff off. works great

[Fireroad Express]

to just get rid of the color, the oven cleaner may work very well. just an educted guess on my part, is that the clear anodized layer will still be there. to test this theory take a multimeter and test for continuity on the cleaned surface. if you don't have continuity the layer is still there. trying to get a polished aluminum surface may take quite a while. i suppose it all depends on what you are doing with the parts you want to strip.

[FireHead]

If the anodzing was done properly, you are not going to be able to get it of with any chemical and even if the colorant process was done with something similar to RIT clothing die, the surface you will find yourself left with will be grey and haze (Anodzing is basically layer of corrosion). :geek:

[Bansh-eman]

If the anodzing was done properly, you are not going to be able to get it of with any chemical and even if the colorant process was done with something similar to RIT clothing die, the surface you will find yourself left with will be grey and haze (Anodzing is basically layer of corrosion). :geek:

Mark,

 

90% of the places doing Anodizing these day don't use to old school method that the metal actually takes on the new color. most of them are a simple dye thats got a sealant covering them.

[JKJK]

This is a quote from a guy who recently restored some old parts for me. (stripping anodizing) These are the products i use paint remover and high text lye.First i remove any excess paint from part.

 

 

 

After the part is cleaned i place it in my tank.Use 1oz of lye to gal of hot water.After a couple of minutes the lye will begin to activate and smoke will rise from the water.

 

 

 

After a few minutes your part should turn a bronze type of color.

 

 

 

Next remove your part and scrub off with a steel wool pad and rinse off.Your fully de-anodized.Happy de-anodizing!

[FireHead]

Mark,

 

90% of the places doing Anodizing these day don't use to old school method that the metal actually takes on the new color. most of them are a simple dye thats got a sealant covering them.

Do you guys even know what anodizing is.............. somthing is missing here, but I am not sure what. Read the Wikipedia page on anodizing and tell me is you think you are still stripping anything but the color off of the part with any chemical.

 

http://en.wikipedia.org/wiki/Anodising

[FireHead]

This is a quote from a guy who recently restored some old parts for me. (stripping anodizing) These are the products i use paint remover and high text lye.First i remove any excess paint from part.

 

After the part is cleaned i place it in my tank.Use 1oz of lye to gal of hot water.After a couple of minutes the lye will begin to activate and smoke will rise from the water.

 

After a few minutes your part should turn a bronze type of color.

 

Next remove your part and scrub off with a steel wool pad and rinse off.Your fully de-anodized.Happy de-anodizing!

If that worked, you parts were not actually anodized in the first place. Thuy were wither painted or just dipped in dye without going through an andozing process.