So, back when I started planning this build, I picked up a Harbor Freight flux core wire welder. It was on sale for about $90 when I got it.
One of these:
Today I picked up the metal for my stand. This included 48 ft. of 1-1/2" x 1-1/2" 14 ga square tube (mild steel) and some bar stock for the caster mounts, pump mounts and burner mounts. Also picked up some 16 ga aluminum diamond plate for pump shields. About all I have left to get is something for my wind shields. Got it all for less than $100!
After cutting a few of the pieces with a metal blade on my chop saw, I decided to cut off a few small scrap pieces and practice welding a bit.
I'll start by saying that I've never welded before in my life, but wanted to use this project as a way to learn. After playing around a bit, I can tell it's going to take a bit more planing before I get the hang of this and I'm ready to start actually welding the frame.
Here's a pic of my first weld, after some grinding with a flap wheel.
She ain't pretty, but she's mine!!