Flanging

[1967_Joe]

I'm about to replace a section of the rear quarter panel on my '67. A buddy of mine uses a flanging tool and lap joints the panels together. It looks great and seems like it makes the job easier. My concern is the lap joint would be a great place to hold moisture. Any suggestions on treating the lap joint prior to welding?

Thanks in advance.

Joe

 

[greenmonsta79]

Just butt weld the panel and you won't have to worry bout it.

 

[dfarmercse]

I used the lap joint on my 1/4 about a month ago. I didn't weld but gluded them. The glue filled the seam so no problem with the lap holding water.

Dave F

 

[YY1]

if you dress the butt welds rel nice you can't even tell any work was done, even from inside the trunk.

 

[Donny]

Just know that Butt welds take double the time to do, and, you best have some skills to do this weld, or you could really mess it up big time.

 

[Propwash]

Copper or Zinc based weld-thru primer in the lap, lay it in thick. At least that is anti-corrosive and won't be melted all away by the heat. Pull the lap together as tight as possible either by #8/10 sheet metal screws or Cleco's. Weld across the backside to seal out the air, or worst case use a decent seam sealer. People flange lap all the time. I wouldn't freak out about it as long as you take the proper steps to seal it all in.

I agree with Donny on Butt-welding. Unless you have some experience, better get some practice before taking it on. Pretty easy to warp panels, end up with bad gaps and have the metal pull out of place. Too much metal in your cut is easy to trim, too little metal...well.......that can be a real pain!