Retrobike Forum Index

It is currently Wed Dec 07, 2016 1:44 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 8 posts ] 
Author Message
PostPosted: Fri Oct 25, 2013 9:31 pm 
Old School Grand Master
User avatar

Joined: Mon Jul 03, 2006 12:15 am
Posts: 3348
Location: Up north
Can any one offer any advice on removing powder coat from a fillet brazed Steel frame?

I dont think blasting is a good option with the brass fillets!!

Any ideas or peoples experiences appreciated :wink:


Top
 Profile  
 
PostPosted: Fri Oct 25, 2013 10:02 pm 
Old School Hero

Joined: Sat Jan 16, 2010 10:07 pm
Posts: 213
nitromors does soften it and wire brush on grinder but its slow going , also 2 pack thinners softens it quicker but not the easiest thing to soak a bike frame , our local powdercoaters used to have a big container what they used for soaking parts in , theres also blasting it with bi carbonate of soda


Top
 Profile  
 
PostPosted: Fri Oct 25, 2013 10:13 pm 
retrobike rider
retrobike rider
User avatar

Joined: Sun Sep 19, 2010 9:30 pm
Posts: 2705
Location: nuneaton warks
Gasket cleaner from halfords


Top
 Profile  
 
PostPosted: Sat Oct 26, 2013 2:44 am 
Retro Guru
User avatar

Joined: Fri Jan 13, 2012 2:28 am
Posts: 1057
Location: Near Gatwick
I strip powder quite often, I use paint stripper.
Coaters will probably have a bath of either some propriety
stripper or methylene chloride.
I just whack a nice thick layer of stripper on and keep the thing
well covered, in stripper, and the powder comes off.
Here's a pitted brake plate off of my bike, I thought I could live with what the coating would look like over the pitting, I couldn't, so I had to strip the coating off and redo it.
As you can see the stripper is OK on powder.


Attachments:
stripper1.jpg
stripper1.jpg [ 35.75 KiB | Viewed 335 times ]
stripper2.jpg
stripper2.jpg [ 47 KiB | Viewed 335 times ]
Top
 Profile  
 
PostPosted: Sat Oct 26, 2013 10:28 am 
Old School Hero

Joined: Wed Apr 25, 2012 10:02 am
Posts: 212
Location: Devon
I have had my Orange and both Cannondales shot blasted before powder coating.These days the blasters have a range of materials they can use with varying degrees of abrasiveness.Never worried about any of mine being blasted and it does give a good key for the paint.

Many many years ago I personally shotblasted my Claud Butler road bike,which had brazed lugs,and it survived the experience and went on for another ten years or so before I discovered the new fangled mountain bikes and skipped it.We had a medium which was suitable for surface blasting plastic mouldings to prepare them for painting.


Top
 Profile  
 
PostPosted: Sat Oct 26, 2013 8:30 pm 
Retro Guru
Retro Guru
User avatar

Joined: Fri Sep 19, 2008 4:37 pm
Posts: 5198
Location: North West
I found that the new mix of nitromors actually worked better on powder than on paint ... ? :shock: :lol:

From this :

Image

To this :

Image

WD :D


Top
 Profile  
 
PostPosted: Mon Oct 28, 2013 12:02 am 
Old School Grand Master
User avatar

Joined: Mon Jul 03, 2006 12:15 am
Posts: 3348
Location: Up north
Thanks chaps. I have some basic nitromors so i will give it a go. The frame is a Curtlo so i dont want to risk the powder coaters blasting the crap out of the fillet brazing :shock:


Top
 Profile  
 
PostPosted: Mon Oct 28, 2013 12:06 am 
Retro Guru
Retro Guru
User avatar

Joined: Fri Sep 19, 2008 4:37 pm
Posts: 5198
Location: North West
Brass is harder than ally so any decent painter who preps ally frames will have no issues :D

I had silver solder in mine (soft) with no issues :D

WD :D


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: Gaddmeister, groovyblueshed, IHateRain, Minifreak, rc200ti and 33 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group