I have a small part on my VW sun roof that needs to be repaired. I'm not able to get my hands on a new part so I'm wondering if there is another way to fix it. "WELD" it, I have a Miller 175 (Argon) in my shop but can't figure out if the part is aluminium or magnesium. The broken part seems to be very porous and soft. Any ideas how to go about repairing a small part with only 1/8 inch of surface to weld?

If there is an area that you can scape off a few shavings with a knife, and then hit them with a propane torch, you may be able to tell if they are magnesium if you can get them to ignite. If they are mag, you will get a very intense white flame. Make sure they are small slivers, and do it on a nice steel table of cement floor well away from flammables, as magnesium fire is HOT.Dave

Is it aluminum or magnesium?

Apr 19, 2005 21 Replies

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P4_Squisher 21 years ago

It may be easier and significantly less time consuming to look in to a plastic replacemnt. Maybe you could file one out of some popular industial plastic.

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Jimmie 21 years ago

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