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Old 11-20-2011, 01:32 AM
Rat-Fink Rat-Fink is offline
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Location: The Old Pueblo, 85705 (Tucson AZ)
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Default Question specific 2 Chicago Electric 90 MIG

Welding / tacking 22 G sheet metal: using only clean, virgin metal.

I have a gas-less Chicago Electric 90 amp MIG with limited settings:
MIN / MAX and 0 to 9 feed. Its mild steel Flux Core wire.

Using 3/16" hole, plug weld, straight down into the hole with 1/2" lead-in wire method I get too much heat & spatter. I use MIN and 0-1 feed setting. My weld doesn't fill the hole unless given 2-3 seconds, by then its usually over the hole edge & not penetrating well.

This makes for a lot of grinding & clean-up.

Other than getting a gas rig (no $$$) what can be done to get my settings & technique better on these plug welds using the CE 90 amper??

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Old 11-20-2011, 02:07 PM
Truckntran Bill Truckntran Bill is offline
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If all you are doing is holding the trigger and not moving you will tend to blow holes...or at least I do. What I like to do is weld a round bead inside the hole, touching the edge of the top part, and filling the hole outside inwards. Do it like any lap weld, just in a circular motion.
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