A turbine sprayer…
Hmmm… Interesting… water / condensation. That is an issue. I put in an A/C evaporator between the compressor and the tank (mounted on the wall) in order to contend with the water issue. It appears to work; but I still have dryers in place. I killed one of my 90 degree cut off tool due to water. In the air hose. It was HF, so not a big deal.
If sheet metal is all you’re going to use a welder for, then I’d pick up a 200 amp inverter TIG / Stick. I’ve got an AlphaTIG 200x it was 800 bucks on amazon. I’ve used the hell out of it. for the first 6 months of ownership, I spent about 90 minutes just practicing welding. went to the local steel scrapper, and picked up bits of steel to practice on, then I moved to aluminium, and then stainless.
Panel repair before welding.
I use to use flush mount rivets for panel repair before I knew how to weld.
I use the bead roller to put a recessed edge on the patch, then drill the rivet holes hold the metal in place with kelco. Make sure everything lines up. Then remove the patch, coat with rust preventative, and seam sealer (on the back), put the panel in place with kelco’s and rivet it in place. I used a bit if filler over the rivets and the seam. It worked reasonably well. Filler was a bit thick at 3/32” but you piss with the the cock you’ve got.
In some instances, I prefer this method over welding because of rust prevention
Once I picked up my TIG welder, I spend a shit load of time prepping, cutting filing, sanding to get an exact butt match. hold with maginets. And weld in the new panel. More often than not, I don’t need to use filler metal; and if I do, I use .045” ER70S6 flows nicely. Downside to welding, is if I don’t have access to the back panel, the welded area is much susceptible to rust at the weld joins. I tried welding Stainless instead of cold rolled steel sheets. That was an epic fail.
For body work, stay away from MIG. The welds are too hard, it’s too hard to control the amount heat and filler material, The welds tend to crack with a little tappy tap tap of a body hammer.
Handy tools
A break (which I don’t have)
Bead roller
Shrinker stretcher, (works great for fixing rusty a and c pillars.
Body hammers,
poly mallets (different shapes)
Leather sand bag
(or an English wheel)
Metal files, and 2” angle grinder a dremel kinda works
bits of steel pipe different diameters (to use for shaping radius)
electric sheers & a band saw.