oneandtwo Posted September 21, 2012 Share Posted September 21, 2012 Ive had an old 90 smooth roof down the side of my workshop for ages, (removed it to fit a truckcab) I was going to chuck it as it had a few holes drilled in it for aerial mounting and wires but thought I'd get my TIG out and repair it as i haven't used it for ages. Might be of use to other people with the same problem to show it can be repaired neatly and properly instead of rivetting a patch on top as is often seen. Sorry lack of photos I forgot to take a before shot! Hole enlarged to just come in contact with the underside reinforcing rib - this will help support the patch while tacking it up. Luckily the two holes are right on the rib which will make it a whole lot easier to weld as the reinforcing will stop a lot of the heat distortion. Next step to cut a piece of alloy the same thickness to be an exact fit as the material is so thin; I took it from an old scrap wingtop. Photo shows another peice of wingtop used as a practice piece to set up the welder Tack in place then seam weld up. Sorry I got carried away and sanded it back before I had taken a photo. Photo below shows finished repair ready for the slightest skim of filler, I hate using it but unavoidable on something so thin. I have used panel beating hammer and dolly to just ease down slight distortion to the left of the repair. Roof now ready for skim, prime and repaint. Took 30 mins to get to this stage. Quote Link to comment Share on other sites More sharing options...
miketomcat Posted September 22, 2012 Share Posted September 22, 2012 Good job but you might regret posting as the flood of can you just's start. Mike Quote Link to comment Share on other sites More sharing options...
UdderlyOffroad Posted September 22, 2012 Share Posted September 22, 2012 Nah Mike would just fibreglass it ;-) Nice job, I was under the impression the alloy was a right sow to weld. What rods did you use? Quote Link to comment Share on other sites More sharing options...
oneandtwo Posted September 22, 2012 Author Share Posted September 22, 2012 OE AL Mg5 rods, got them ages ago for alloy with magnesium content. take really well to landrover alloy, used with Lorch/esab acdc machine Quote Link to comment Share on other sites More sharing options...
tacr2man Posted September 22, 2012 Share Posted September 22, 2012 my mate used to gasweld landy with a alli filler rod , but the newer ones are quite a bit thinner guage , but he lives in spain now so a bit far to go Your job looks a lot better than the bit of alii stuck on with tigerseal Quote Link to comment Share on other sites More sharing options...
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