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Old 06-27-2006, 03:51 PM
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Filling trim holes

What is the best way to fill unwanted trim holes. If you weld them as I've been told, what do you do about the back side?
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Old 06-27-2006, 08:09 PM
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You do not need to back the holes up with anything, they are small enough that the weld material will bridge the hole.

Vince
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Old 06-27-2006, 08:37 PM
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You can hold a copper backing piece behind the hole...weld the hole up with a mig welder and then grind flat. The mig weld will not stick to the copper backer and when you remove it the back side of the weld will be flat and flush with the surface.
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Old 06-28-2006, 11:28 AM
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I've doen the copper backing. It avoids that porcupine on the other side of the panel quite nicely

I recomend using the copper. Either Flatten out some copper tubing or buy some sheet. It doesn't really have to be thickl either. Stuff I usually use is pretty thin and easily flexible to match angles and curves.
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Old 06-28-2006, 11:35 AM
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Aluminum works well too...I've used both with success.

George
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Old 06-28-2006, 04:17 PM
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Unless the hole is VERY small (IE: < 1/8") I would not recommend using filler. Do it the right way and weld it up. The copper tirck works very well - just hold the piece or copper behind the hole, and then start filling in the hole from the outside - in using a mig welder. If you can get a nice thick piece of copper it will help absorb a lot of the heat from the weld and you will have less of a chance of getting some serious warpage or shrinking. I have an old copper hammer head that I use.
Just remember to keep things as cool as you can. Weld a little - cool it down, weld a little - cool it down. ESPECIALLY if you are welding on a large flat panel! Don't get it red hot then dump water on it! Just weld a small portion - then push a damp rag against it to cool it. If the hole is a small one you can weld the whole thing and then cool, but for the larger ones just do like 1/2 at a time.
I don't know about your ride but my 64 Dodge has some big *** trim holes! No way I'd put filler in em!
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Old 06-29-2006, 04:58 AM
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I have to go with the copper tubing also. I just did it for the first time this week and it worked great. I had several pieces of tubing laying around and just smashed one end flat to hold against the back side of the panel. You can bend the tubing any way you want to facilitate getting it in behind just about anything your arms can reach.

barry
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Old 06-29-2006, 04:06 PM
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I am by means no expert but but I've used fiberglass hair filler to fill the holes, if you dont have or can't afford a MIG. Lay the fiberglass filler on both sides arounf the area and in the hole, it's not as good as a wels but stronger than bondo. The downside is the backside looks like a hard hair ball.
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