Brought to you in part by:

M&M Restoration & Tool Supply Store

Great deals on auto restoration supplies!

.


NOTICE! The old Mustangsandmore.com is a read-only archive.
Currently the Search function is inoperative, but we are working on the problem.

Please join us at our NEW Mustangsandmore.com forums located at this location.
Please notice this is a brand new message board, and you must re-register to gain access.

  Mustangsandmore Forum Archive
  Tool Time
  Weld Through Primer, Copper Based?

Post New Topic  Post A Reply
profile | register | preferences | faq | search

next newest topic | next oldest topic
Author Topic:   Weld Through Primer, Copper Based?
68 S-code GT
Gearhead

Posts: 3835
From: Sayreville, NJ, US
Registered: Mar 2000

posted 03-24-2006 07:52 AM     Click Here to See the Profile for 68 S-code GT        Reply w/Quote
I went to get some weld through primer last week and I had a hell of a time finding it. I went to a few weld supply places and they didnít even have it. A guy who worked at one of the places actually told me that he was looking for it also and just wound up not using it.

Any way, I went to the place where I have been buying paint and picked up a can of zinc-based primer. The guy behind the counter asked if I had used this kind before and recommended a different kind. It is a copper-based primer from England. He said that it had greater corrosion resistance and that the conductivity was greater.

Sounded good to me but now Iím rethinking things. When you put some copper behind a hole that you are going to weld up isnít the copper there because it wonít stick to what you are welding?

63Kcode
Gearhead

Posts: 281
From: Anna Tx
Registered: Dec 2004

posted 03-24-2006 04:04 PM     Click Here to See the Profile for 63Kcode        Reply w/Quote
I wouldn't worry about it not sticking. MIG wire is coated with copper to keep it from corroding. The little bit of copper just floats to the top of the weld. The copper is better for the lungs than zinc too.

mellowyellow
Gearhead

Posts: 8198
From: So. Fl.
Registered: Aug 2000

posted 03-25-2006 10:25 AM     Click Here to See the Profile for mellowyellow        Reply w/Quote
Had problem with Weldthru primer. For lapped pieces, coated surfaces with SEMS self-etch primer. For lap welding with pre-drilled holes for plug welding, scratched the surface, set it hot and the eggs started cooking! Worked well-still have a bit of the Weldthru and will probably toss it!

SteveLaRiviere
Administrator

Posts: 48752
From: Saco, Maine
Registered: May 99

posted 03-25-2006 10:35 AM     Click Here to See the Profile for SteveLaRiviere        Reply w/Quote
I used 3M Weldthru on my Mach and that seemed to have worked well. I liked the fact that there was no bare metal left in seams between the welds.

The 3M is gray so I'm guessing it's the zinc type?

------------------
'70 Mustang Mach 1 - '70 Mustang Convertible - '72 Mustang Sprint - '94 F-150 XL

68 S-code GT
Gearhead

Posts: 3835
From: Sayreville, NJ, US
Registered: Mar 2000

posted 03-25-2006 04:43 PM     Click Here to See the Profile for 68 S-code GT        Reply w/Quote
The stuff I have is Weld #2 by U-POL out of Wellingborough Northants, UK.

All times are ET (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Mustangsandmore Front Page

Copyright 2006, Steve LaRiviere. All Rights Reserved.


Ultimate Bulletin Board 5.47d

Amazon Honor System Click Here to Pay Learn More

[Build a free Mustangsandmore.ws Home Page!]

[Posting Pictures]

[About M&M][Members' Pics]

[M&M Conventions] [M&M Mug Shots] [Tech Articles]

[M&M Bookstore] [M&M Restoration & Tool Supply Store]