ancomcabs
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My 630 may have these, does anyone know if this kit is still available? http://screencast.com/t/oP4OaotiR
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Golden Gate
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I'm comfused "MAY" are they at the knee joint?
OP
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ancomcabs
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Lots of rust, if the cracks are there they would be very slight, probably need to grind down to bare metal to be able to tell for sure, that why I say "may"
Idk about the kits, but if it were me I would hit the welds with a wire wheel and a magnaflux kit before you go after things with a grinder.
Golden Gate
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Screw the kits, DIY,(2)IMO if your suspected break is ACTUALLY in a weld and not in flat steel open it up with a grinder. Do yourself a favor if you are not the one WHO will fix it Don't be the one to open it up reason being you may create more work for the one that has to fix it. If you are thinking there are stress cracks there probably are. Myself I am a decent welder confident and comfortable doing it but when it comes to structure or safety I call the professional(in my case its my friend) and I have seen cracks in both but IMO its hard to crack a proper weld usually you will crack the metal around it, in other words the weld is normally stonger then the metal around it. I have experiece with both issues a weld I would actually fix my self... stress fractures on the other hand I hand to my buddy just because it takes much higher heat and specialized sticks to do it right, carbon arc( I have had some really bad stress fractures) This is all in my opinion and I would be interested in hearing about what you find out
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ancomcabs
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Thanks for the advice. I will be gentle when removing the rust/paint once I get a chance to investigate and will post pictures. I too do a little welding but in this case could have a local shop take care of it for me if needed
I have repaired some nasty cracks before in a machine i bought. I got into it with the plasma cutter go couge the crack out and used special rods that cut really deep. The trick is to weld, then grind it down till you see no areas that didn't take, then weld some more, then grind it again, repeat till the crack is totally filled.
I'd avoid MIG welders for this, they are good at depositing material, but i find if you don't direct the wire just right, it will not melt the base metal enough to stick as well as it should. Probably because most of the DIY people have shielding gas for light gauge metals (myself included) that is great for thin metal, but not as good as it should for heavy gauge.
