Bronzing ?????

DubbyDo Officially Full-On Dubber

276 posts · joined Jan 2012 · 24 Oct 2012, 11:49 pm

#928246

Stripped the paint and rusty stuff off my passenger door and found this. I've heard of lead wiping/loading and Bog but I've never seen Bronze used to do car rust repairs. Is it a forgotten art, a frowned upon exercise or just a case of "Hey, lets see if this shit works!!!"
Has anyone heard of this being done? Its done the job of filling the holes but still needs heaps of filler

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HappyDaze Superannuated

2,887 posts · joined Jun 2009 · 25 Oct 2012, 6:01 am

#928251

Bronze welding, or brazing, is used to join steel sections - usually with a 'lap' joint. If there is only a few pin holes, and you only have an oxy set [no MIG] it would be OK.

The turret [roof] of a Beetle was bronze welded to the front quarter panels, along with a couple of other spots. There is less heat required, so less distortion

I'd rather wear a Beetle out by racing it than by polishing it!

L469 Officially Full-On Dubber

288 posts · joined Mar 2010 · 25 Oct 2012, 7:27 am

#928253

it is easier to grind so some people ,the factory included used it
as a time saver. the 2 metals react causing corrosion . maybe not so ideal .

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 · 25 Oct 2012, 8:17 am

#928255

Yep, seen it heaps but definately corrosion inducing.

Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

DubbyDo Officially Full-On Dubber

276 posts · joined Jan 2012 · 25 Oct 2012, 2:43 pm

#928289

Probably best to cut it out then, don't really want to try and get another door here. Freight just from Darwin is near on 500😠😠😠

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 · 25 Oct 2012, 3:19 pm

#928292

DubbyDo wrote:Probably best to cut it out then, don't really want to try and get another door here. Freight just from Darwin is near on 500😠😠😠

If there are no rust pinholes present, you might just leave it but definately use a good penetrating rust proofing behind the repair.

Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

helbus Administrator Mad fabricator, paint and body

7,386 posts · joined Sep 2002 · 25 Oct 2012, 5:02 pm

#928312

Brazing is not good for panel repairs. The heat and flux used both promotes and accelerates rust.

For joins on cars nowadays on the production line they use MIG Bronze.

EJ22 into Bay Microbus - Finished project build thread- click on this spot here for info

Lucky Phil Wolfsburg Wizard

480 posts · joined Aug 2010 · 25 Oct 2012, 6:35 pm

#928319

Wyy would a MIG bronze and a properly cleaned up Oxy bronze be any different?

vwo60 Veteran Volks Folk

2,036 posts · joined Feb 2007 · 25 Oct 2012, 7:16 pm

#928324

The flux is the issue, if it is removed there is no problem, same as oxy welding, if you do not remove the scale caused by the welding it will rust again.

Lucky Phil Wolfsburg Wizard

480 posts · joined Aug 2010 · 26 Oct 2012, 1:58 pm

#928471

Exactly!
That's how I repaired the pinholes around the front and rear windows of my HQ many moons ago.
Was all good 10 years later when I sold it.