found what seems to be a good deal on a 300A MIG welder.
i tried it out last night and have a few questions about settings/options.
1. this machine has 2 ground (quick connects) one marked "Steel" and
one marked "Aluminum" ... the steel socket has an icon of what looks
like 2 loops of a transformer. the aluminum, has 4 loops.
what is the effective difference between these two ground sockets?
2. it has a button for "BackBurn" control. what is Backburn? and why
do i want to control it?
3. this welder has 30 settings. (my current Cebora has 6). one knob
selects "LO/MEDIUM/HIGH" the other goes from 1 to 10. how the
heck do i figure out which is best, since the selections come in such
is it ALWAYS supposed to sound like frying bacon, like i was taught?
that being said, i ramped the welder all the way up.. HIGH setting on
first knob, "10" on the second, with wirefeed all the way up. it made
a really highfrequency buzzing sound. kinda like a squarewave machine.
-- didnt sound pleasant, at any rate.
it has no literature so i dont know what the waveform even is. turning
the wirefeed down just made welding impossible at that high setting.
i'd say, when i lifted my torch, the last 4" of puddle were still
i was running 1mm wire.. the 'bead' was 1/2"wide and 1/4" high, more
18 years ago