FirstEliminator wrote:Thanks for the quick reply. I plan to weld anything available. Steel, steel sheet metal, aluminum, Stainless, cast iron, etc.
Ok, this is good to know, as-is some of the other information you've provided.
FirstEliminator wrote:The torch is an Esab HW-20. It appears to be missing the rear cap. Not sure what I will need for electrode or the ceramic part in the front.
What you need is a back cap and cups for your torch.
This kit is for a #9 or #20 torch, it includes back caps, cups, gas lenses, tungsten and #6, #7 and #8 cups. This includes setups for 1/16", 3/32" and 1/8", so it has everything you need for your current torch, AFAICT. Spartan linked to this also.
https://weldmongerstore.com/collections ... s-lens-kit
This kit is your basic 3/32" kit, which will save you money, but it only has what you need for the 3/32" setup. I recommend just getting the basic kit here as you're limited to amps with your circuit, so just stick to 3/32" electrodes. A lot of people do the majority of their welding with 3/32" electrodes. I'm one such person. Also, as Jody recommends I use 2% lanthanated tungsten for everything, it's a good one stop shopping tungsten.
https://weldmongerstore.com/collections ... s-lens-kit
FirstEliminator wrote:As I remember the torch is on a short cable and cooler lines. 12 feet I think. My preference would be to have a 50 foot reach.
You might be able to upgrade your hoses on your torch, but it usually cost just about as much to get the hoses as it does to buy a new torch, so in all honestly, I would just get another torch. But before you do that I would just use what you have to get your feet/puddle wet.

Jody sells torches and hoses, but I would just stick to the #20 you have for the time being.
FirstEliminator wrote:Wondering if I should just order a new torch ? If so, that opens another list of questions. My thought so far is even though the welder is a 300amp, I can't really use it to it's full potential as the circuit it's on is a 125amp 208. Miller's preferred input circuit would be 208v 225 amp. 60% operating potential perhaps? With that in mind, I would think a 200amp torch would not be undersized for this 300amp welder. Does it work that way?
Because of this I would get the basic kit above which only includes the 3/32" setup, and get extra 3/32" tungstens. You can upgrade to get 1/16" and/or 1/8" later, but since you will be limited on the amount of amps you can use the welder for personally I would stick with 3/32'.
Here's extra tungsten, I try to use only the CK brand, I just bought a pack from Weldmonger that arrived today.
https://weldmongerstore.com/collections ... pack-of-10
You can use your diamond wheel to sharpen them, that's perfect! Post about sharpening in a thread in the tig section for more answers on that.
FirstEliminator wrote:Gas torch?
A gas torch would be a #9 #17 or #26, the #20, and #18 are water cooled. You have the #20 and the water cooler.
As Spartan noted, some of the mig/stick helmets are not sensitive enough for tig, but you should be good to test it. I wouldn't worry about this too much, I was just asking to find out as you do need a helmet. You might want to get a pair of tig gloves, Jody has a pair for $15. Tig uses thin gloves typically as you need to feed the filler. I also recommend the Tig Finger, it will keep your torch hand from getting hot, and I recommend the XL size, that's the size I use mostly. Jody has a set of the gloves and XL tig finger for $34.49 (make sure you select the size of tig finger you want and size of gloves)
https://weldmongerstore.com/collections ... ove-bundle
Your straight argon bottle is what you want, the argon/co2 is for mig.
You get free shipping from Weldmonger with a $75 order, and I think the basic kit, pack of electrodes and gloves/tig-finger would get you there. I'm not trying to push Weldmonger on your, but you will find their prices are pretty similar as you will find at other online stores, the CK stuff is not discounted very much, and Weldmonger packages up the kits to save you some money. Also, Jody has some of the best videos on YouTube to learn tig and these are his forums also.
Don't hesitate to ask any questions you have.
Oh, you will still need to get some tig filler, I suggest a 1 lb. tube of 1/16" ER-70S-2, 1 lb of 3/32" ER-70S-2 and maybe 1 lbs. of 1/16" 4043 or 4943 for aluminum. You can use the ER70S-2 for most steel, and some use the 4043/4943 for aluminum, but I am just getting into aluminum and bought some 4043 (what most use). You will need to get this from your local welding store or order from somewhere else online. (arc-zone, welding store, cyberweld, etc...) But be warned some of the places try to force you into buying 10 lbs. of filler, I would only get 1 lb. of each I suggested. Don't overspend unneeded.
I'm not a professional, so get other's opinions also. This is pretty much the base essentials you will need and I think the above is the most cost effective way to get there.
(sorry for the long reply, I'm a bit wordy)