i'd like to buy a tig welder. I've come across as used Lincoln
Squarewave 175 for 1300$canadian complete with torch, pedal, and
I'm looking to weld both steel and aluminium. Is the SW 175 a little
too old to consider? Is the price good/fair/terrible?
Any input would be appreciated.
Reputedly an issue is that older copper-and-iron machines can use up
to twice the power for the same welding work as modern silicon
"inverter" welding machines. The real problem can be if an older
machine's power requirement is more than the mains can supply -
whereas an more expensive inverter set might be able to plug into the
mains as it is. In Europe with 240V supply this is rarely an issue
but in N.Am. with 110V supply it can be.
Ernie vouches for the quality of this machine and he knows... I can
tell you I learned TIG mainly on a 1960's copper-and-iron machine of
massive size with great big clunking electro-mechanical relays as you
put your foot on the power pedal, but it was the sweetest running of
all the machines in the TIG welding bay, all the others being
I have a SQW 175 and I find it completely satisfactory, but then I have only
used this one machine...$1300 is about 60% of current new price for the new
175 machine. I think that if it's in good nick it would be a deal. I
almost never see light Tig machines in my local papers, only 600 volt three
phase from time to time.