Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 10-16-09, 11:53 AM   #1
armybikerider
Senior Member
Thread Starter
 
armybikerider's Avatar
 
Join Date: Jun 2009
Bikes:
Posts: 257
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Stripping anodized AL

Anyone ever tried stripping the anodized color off aluminum? I have a couple of AL American Classic water bottle cages that are anodized an awful purple that I'd like to make bare silver.

If so, what product/technique did you use?

Thanks in advance.

David
armybikerider is offline   Reply With Quote
Old 10-16-09, 12:11 PM   #2
Batavus
Senior Member
 
Join Date: Nov 2004
Location: Netherlands
Bikes: Wabi Lightning, fixed 13.6 pounds. Cera steel road bike Campy veloce 9s
Posts: 521
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hot water, caustic soda and 3-4 minutes of soak will do the job. But be careful, this stuff bites! Protect yourself and do it in a well-ventilated area. Also, first pour the water in a plastic container, then the caustic soda, not the other way around.

Good luck!
Batavus is offline   Reply With Quote
Old 10-16-09, 12:40 PM   #3
Nessism
Senior Member
 
Nessism's Avatar
 
Join Date: Jun 2004
Location: Torrance, CA
Bikes: Homebuilt steel
Posts: 2,333
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Oven cleaner with lye will take off the anodizing.
__________________
Becareful buying/selling bike parts on-line. I learned the hard way. :(

Good/Bad Trader Listing
Nessism is offline   Reply With Quote
Old 10-16-09, 12:41 PM   #4
Grand Bois
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Bikes:
Posts: 16,819
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
Easy Off oven cleaner works great. Most of the parts on my PX10 have been stripped with Easy Off and then polished.

Grand Bois is online now   Reply With Quote
Old 10-16-09, 07:34 PM   #5
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 29,108
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 174 Post(s)
Lye is caustic soda (Sodium Hydroxide) and that's what's in Easy-Off. As noted, be real careful with this stuff as it is very corrosive to skin and eyes. Rubber gloves and GOOD eye protection are highly recommended. I wonder if the average person spraying this stuff into their oven realizes what they are using and what it can do to them.

Once you do strip the annodizing, the resulting bare aluminum will leave black marks on your water bottles almost immediately so be prepared for that.
HillRider is online now   Reply With Quote
Old 10-16-09, 09:52 PM   #6
armybikerider
Senior Member
Thread Starter
 
armybikerider's Avatar
 
Join Date: Jun 2009
Bikes:
Posts: 257
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Thanks.
armybikerider is offline   Reply With Quote
Old 10-16-09, 11:27 PM   #7
sch
Senior Member
 
Join Date: May 2003
Location: Mountain Brook. AL
Bikes:
Posts: 3,085
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Rather than use potentially hazardous chemicals (unless they are just laying around) just
get some stainless steel cages. Weight penalty is 20 grams or so and they DO NOT
stain the bottles. Raw aluminum makes big black spots on WB plastic and the stainless
seems to last longer. Welded aluminum cracks more easily than welded stainless IME.
sch is offline   Reply With Quote
Old 10-17-09, 12:10 AM   #8
Jeff Wills
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 8,064
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 72 Post(s)
Quote:
Originally Posted by sch View Post
Rather than use potentially hazardous chemicals (unless they are just laying around) just
get some stainless steel cages. Weight penalty is 20 grams or so and they DO NOT
stain the bottles. Raw aluminum makes big black spots on WB plastic and the stainless
seems to last longer. Welded aluminum cracks more easily than welded stainless IME.
+1 . Put the purple bottle cages up on Ebay. Somebody will want them. I don't know why, but someone will.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 10-19-09, 07:59 PM   #9
rwortman 
Senior Member
 
Join Date: Sep 2009
Location: New Milford CT
Bikes:
Posts: 143
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Dirtdrop View Post
Easy Off oven cleaner works great. Most of the parts on my PX10 have been stripped with Easy Off and then polished.

Now that's a sweet looking bike.
rwortman is offline   Reply With Quote
Old 10-22-09, 08:51 AM   #10
Dr.Deltron
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
Quote:
Originally Posted by Jeff Wills View Post
Somebody will want them. I don't know why, but someone will.
I almost replied before reading the whole thread.

I want them!! I can use them on a couple of bikes, but more specifically .. my lavender Colnago.

Please PM me if they are still purple! I think I have a couple of black ones (AC) if you want to trade.
  Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 07:56 AM.