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Old 01-27-2003, 01:40 PM
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Post welding a frame

What is the power and type of welder I should use to weld a frame back together after shortening it? If I go with a MIG, must I use gas for this?
Thanks,
Scott

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Old 01-27-2003, 02:38 PM
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I prefer a Lincoln 225 amp AC buzz box for anything 1/8" or over. Use 3/32" or 1/8" 7014 0r 7018 (can't remember which - one is DC, one is AC - get the AC one). You get better penetration, bead control, really pretty bead appearance, etc. Wire feed can too easily give a cold weld (no penetration), and I don't like the very hard bead it gives, even in MIG mode. Brittle welds aren't something I want on a frame!

Amp setting must be determined by experimentation but for a frame, 70A-90A is the range you will use.

[ January 27, 2003: Message edited by: willys36@aol.com ]</p>
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Old 01-28-2003, 09:49 AM
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You want good weld penetration. Usually when you are welding a frame, you are boxing and if you are doing clip or a frame "Z" or "C" you will weld a wrap around the frame so that you get double welds. So the penetration needs to be very deep. Most hobbiest do not use a MIG this powereful, but you may be able to rent one. The flux core MIG wire will give a deeper pentetration than use of the gas.

A good buzz box and stick is pretty good for use on frame welds, one of the few places that rodding calls for a heavy weld.
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