Hh140 100%co2

[Hootwelds]

I set my HH140 up over the weekend with straight CO2 just to see how well
it would work. I had been somewhat hesitant because of the warning on using the supplied regulator with 100% CO2. I was really impressed with the quality of the welds, almost zero spatter and the regulator never even got cold. I was using .023 Pinnacle Alloy wire and was quite impressed. I didnt try .030 but will soon and maybe post some pics. I really liked that I could weld for almost an hour and barely made a dent in the #10 bottle of CO2.
Can't really justify c25 anymore except for sheet metal where it excels.

[FarmBoy9205]

I set my HH140 up over the weekend with straight CO2 just to see how well
it would work. I had been somewhat hesitant because of the warning on using the supplied regulator with 100% CO2. I was really impressed with the quality of the welds, almost zero spatter and the regulator never even got cold. I was using .023 Pinnacle Alloy wire and was quite impressed. I didnt try .030 but will soon and maybe post some pics. I really liked that I could weld for almost an hour and barely made a dent in the #10 bottle of CO2.
Can't really justify c25 anymore except for sheet metal where it excels.

With solid wire co2 produces more splatter than c25. Remember co2 is a active gas not a inert gas. Solid wire is limited in amount of deoxidizers that can it can contain. The co2 bottles last a long time due to the fact that bottle is mostly liquid and 1 liter of liquid co2 produces 1000 liters of co2 gas.

[Hootwelds]

Well I tried .030 solid wire with CO2 and I have to say that I prefer the .023
wire. I found .030 to be more unstable and "snappy"(probably not the correct term). Much easier to get a smooth sizzling sounding arc with .023. I am novice at best,but this was my experience. If anybody cares to wade in I would welcome the feedback. I'll stick with .023 for stuff up to 1/8" and
go .030 fluxcore for the rest. This seems to me the best for the HH140.

[FarmBoy9205]

Well I tried .030 solid wire with CO2 and I have to say that I prefer the .023
wire. I found .030 to be more unstable and "snappy"(probably not the correct term). Much easier to get a smooth sizzling sounding arc with .023. I am novice at best,but this was my experience. If anybody cares to wade in I would welcome the feedback. I'll stick with .023 for stuff up to 1/8" and
go .030 fluxcore for the rest. This seems to me the best for the HH140.

A lot of it depends on how much power your welder has. You need a higher voltage with Co2 than C25. C25 0.023 15-20v, 0.030 15-24v. Co2 0.023 18.5-21.5V and 0.030 18.5-24V.

[Hootwelds]

Well it's been a while since I posted initial experience with 100% CO2. After using it for awhile I have to say it's proving less versatile than C25. The arc is
just less stable and not as smooth. It does give good penetration but at the expense of spatter and weld appearance. I intially liked it but now I think I'll just stick with C25. I just dont like how hard it its to get a really smooth arc
with CO2. Works good for some applications and is very economical but I will be going back to C25.

[kctgb]

I use CO2 for all my plate welding and thicker stuff as it seems to burn in much better. Not so good for thin stuff. For me spatter isn't a problem unless my nozzle is clogged or my torch is to far from what I'm welding.