Thanks Greg, this is very interesting. The range with both wfs and voltage is much larger than I thought it would be. Wonderful video

Your excellent demos shows that both Voltage and Feed Speed have some effect when adjusted independently from each other, but not as much as I have heard about in other videos, so I learned a lot here on the subject. I think the two (voltage and feed speed) are like a teeter-totter and should be balanced to achieve decent results where penetration is concerned. I am very interested to see the results when performed with 0.035 wire. Perhaps the affects will be more pronounced with the higher current-carrying capacity available via the thicker wire where the base metal is 1/4” plate. I recently changed my wire from 0.035 Flux Core to 0.030 Solid wire, and I was having a lot of difficulty getting to the proper settings. I tried all kinds of Feed Speed and Voltage combinations, and the welder kept stammering and spitting. Thought it might be gas flow, but that made no difference. Eventually I took a closer look at the feed roller, and watched it while I held the gun on the plate to see if I could see anything. Low and Behold, the roller was slipping, and that was the cause of the stammering. When I had switched to the 0.030 wire, I failed to adjust the drive roller tension for the smaller wire! After I got it properly adjusted, the Auto-Set function settings worked perfectly! I wasted a couple hours thinking something was wrong with my machine, or something was wrong with the new roll of wire I just put in. I know MIG isn’t your first choice, but perhaps you could do a video segment along with Feed Speed and address feed roller tension affects (stammering i.e. it sort of mimics too high of a voltage and too low of a feed speed) address proper wire tensioner and the issues it can cause. It would have saved me a lot of frustration.

To me, the 290 W ipm penetration looked the best. It could be just how it looks on screen as opposed to in person. I have both 110 and 220 in my garage shop. For a DIY MIG has its place but so does stick.

really appreciate your content Greg. looking forward to your next ones about mig short circuit.

Hey Greg. After watching your channel and a few others I bought a flux core special from HF last month and I'm pleased with my progress. Just a note from a n00b to say I think I got a lot out of this video and the others about voltage and feed differences. Thx for the content!

For the most part this is pretty much what I expected, although the “w” was a surprise. For the most part I’ve always thought that volts and ipm had to coincide in order to affect penetration. I’m sure that flux, dualshield, different gas, and or spray transfer will be the ones that really affect penetration.

What wattage generator does it take to run your welder?