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Repairing drilled holes in Radiator canopy

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GA. Kern

12-20-2002 04:44:05




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I have an SC case and the former owner(s) drilled about 50 1/8" holes in a dent. I assume to make it return to shape when pounded out. I pounded out the dent and it looks not too bad shape-wise. Now how do I fill in the drilled holes. I read someplace that you use lead or epoxy. Can someone enlighten me as to the best process for this. I want it to be neat inside and out. Thanks




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Don LC

01-02-2003 05:36:35




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 Re: Repairing drilled holes in Radiator canopy in reply to GA. Kern, 12-20-2002 04:44:05  
I wouldn't bother filling the holes....the holes will help the bondo (body filler)to hold better.....you will have to try and keep the back side smoth also..... don't try to do this in one application....it's going to take some filing and sanding (36 grit)....then finish coat and normal finishing..counter sink the holes(1/16")....



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Fred Kobs

12-20-2002 13:55:26




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 Re: Repairing drilled holes in Radiator canopy in reply to GA. Kern, 12-20-2002 04:44:05  
If you have a mig welder...take a piece of soft copper tubing and flatten it out on one end and give it a slight bend to use as a handle. Hold the copper firmly against the back side while welding the hole shut. With a little practice you will only have to touch it with a grinder to remove a high spot or two. Having the copper backer firmly against back of entire hole is key. The back of the weld should turn out almost as pretty as the front. Hope this helps. Go slow or will warp the piece. Only a couple holes at a time.

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Fred Kobs

12-20-2002 13:51:35




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 Re: Repairing drilled holes in Radiator canopy in reply to GA. Kern, 12-20-2002 04:44:05  
If you have a mig welder...take a piece of soft copper tubing and flatten it out on one end and give it a slight bend to use as a handle. Hold the copper firmly against the back side while welding the hole shut. With a little practice you will only have to touch it with a grinder to remove a high spot or two. Having the copper backer firmly against back of entire hole is key. The back of the weld should turn out almost as pretty as the front. Hope this helps. Go slow or will warp the piece. Only a couple holes at a time.

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Fred Kobs

12-20-2002 13:49:33




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 Re: Repairing drilled holes in Radiator canopy in reply to GA. Kern, 12-20-2002 04:44:05  
If you have a mig welder...take a piece of soft copper tubing and flatten it out on one end and give it a slight bend to use as a handle. Hold the copper firmly against the back side while welding the hole shut. With a little practice you will only have to touch it with a grinder to remove a high spot or two. Having the copper backer firmly against back of entire hole is key. The back of the weld should turn out almost as pretty as the front. Hope this helps. Go slow or will warp the piece. Only a couple holes at a time.

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Jerry B

12-20-2002 06:42:32




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 Re: Repairing drilled holes in Radiator canopy in reply to GA. Kern, 12-20-2002 04:44:05  
Well you are asking a lot by wanting "neat" inside and out. Of course the outside is what really matters.

With 50 holes you have a real challenge on your hands. It might be best to grind everything clean and start MIG welding. I would do the welding on the inside. That way you will have less grinding to do on the outside. You will be surprized at how good you can get after a few minutes doing the same thing over and over and... Well, you get the idea.

If leading is your choice, the holes will have to be filled by some metalic process. (welding, brazing, ect.) A sheet of copper bolted, brazed, screwed into place could also be used as a backing to prevent the solder and lead from dripping through.

Keep us posted on how it goes.

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GA. Kern

12-20-2002 14:00:44




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 Re: Re: Repairing drilled holes in Radiator canopy in reply to Jerry B, 12-20-2002 06:42:32  
Sorry guys..don't have a MIG welder. Can braze though, but will no doubt heat up too much and warp the tin. Was drilling holes the tx of choice in the first place for such a dent?



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