View Single Post
Fishcop Fishcop is offline
Bird. It's the word...
 
Fishcop's Avatar
 
Join Date: Feb 2001
Location: Port Macquarie NSW Australia
Posts: 5,077
Garage
Quote:
Originally Posted by sfoster13 View Post
you can use a copper backing plate and mig weld directly onto the copper. you can buy something like this:

Welders Helper 3X3 Set Flat/Curve/AngleCop Plates

Or, just go to home depot and buy some copper piping and flatten it to use as a backing. I recommend you practice on some scrap metal first to get the technique down. pretty easy with a little practice. just remember to manage the heat well on the panel you're welding on (use an air compressor to blow air on the panel).
Ditto. I used some copper plate flattened out and then used magnets to keep the copper in place.

Some other advice... the sheet metal on the bonnet and real lid is really susceptible to deforming during welding. Wind your welders settings to a medium level, use short bursts and keep a wet towel close to cool it off quick. Better yet, spend a weekend doing it - just one hole at a time allowing the whole panel to cool down each time. Use a flap wheel to dress the welds, not a grinding wheel (and again, watch out for too much heat).
__________________
John Forcier
Current: 68L 2.0 Hotrod - build underway
Old 05-02-2011, 05:50 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)