My father calls the D-17 a "Rolling weld on wheels". Most of the welds were done with a 110v Mig flux welder or a 220V Dayton stick welder from the Jurassic Age. It works fine.
Pro welders seem to turn their noses up at the inexpensive Mig (flux or gas) units. All the usual reasons. After having seen a pro welder use one to do 1" thick steel and get very decent results (a lot of time and a lot of passes, and a lot of beveling!) even super thick stuff can be done with them if you have the patience for it. So, welding is a kind of "you like what works for you" sort of a thing.
My grandfather used to use a forge, hammer and weld everything the ol' blacksmith way. The Dayton stick welder was his old unit and he used that when he felt like doing that 'new fangled' kind of welding.
I now have a Clarke 130EN Mig unit, a resurrected Chiry Plasma Cutter and a Horrible Freight DC Tig rig. All work, all have their limits. Just built a rack to go over the top of my welding cart and add my metal working toolbox to the top of the cart. Works great but need new casters on the front to handle the extra weight... ugh.
Favorite welder: Jody (
http://www.weldingtipsandtricks.com/ )