Re: HTP PP220 vs MM255
Posted: Thu Dec 31, 2020 9:38 pm
I brought a tank of C10 with me buggy.
Ah, got it. Somehow I was thinking C8. Well, it worked great in any case!BillE.Dee wrote:I brought a tank of C10 with me buggy.
Oscar wrote:Funny you should ask. If I do use the MIG, at the moment it's all 100% short-circuit right now. This is only because I still have two tanks of C25 that I need to get rid of, so I can exchange them for pure argon in order to get some extra reserve tanks of Argon to run my pulsed-spray mix. So yea once these two tanks are depleted, no reason to short circuit ever again. And if I wanted to I could still use a C10 mix anyways.BugHunter wrote:What % of the time would you say you use yours on short circuit vs spray? I ask because I could see me almost never running short circuit again.
I have FCAW-G wire but I don't really use it to be honest. Just wanted to try it. If I ever do want to use it, I can always mix 75/25 easily with my Frankenmixer, using a tank of Argon and a tank of CO₂. Besides, I can make my MIGs run FCAW-G in pulsed-spray in one of the pulse programs that is meant for another wire type. I just have to use my super-secret Ar-CO₂-O₂ gas mixture and some voltage tweaks. I can weld (with FCAW-G wire) down to 16gauge with 035 and down to 14ga with 045 wire.Chris H wrote:Oscar wrote:Funny you should ask. If I do use the MIG, at the moment it's all 100% short-circuit right now. This is only because I still have two tanks of C25 that I need to get rid of, so I can exchange them for pure argon in order to get some extra reserve tanks of Argon to run my pulsed-spray mix. So yea once these two tanks are depleted, no reason to short circuit ever again. And if I wanted to I could still use a C10 mix anyways.BugHunter wrote:What % of the time would you say you use yours on short circuit vs spray? I ask because I could see me almost never running short circuit again.
Oscar, do you do much welding with gas shielded flux core? I have really been enjoying it as a process for heavier gage welding and the 75/25 is something to have handy for that process. I am gearing up for pulse and spray and will get a dedicated bottle of 90/10 for those modes. I do a fair bit of vertical / out of position welding so will be curious to see if pulse transfer will get the same penetration on heavier material that gas shield gets me. Sure is a fun hobby we have,
I run Lincoln 71M on 100% CO2, and it works fine. It is also much cheaper than 75/25. Go find a used 20 lb CO2 tank for around $50 and it gives you as much gas as a 178 cu ft C25 tank. The refills are crazy cheap, and I don't always have to go to a LWS to get refilled.Chris H wrote:Oscar, do you do much welding with gas shielded flux core? I have really been enjoying it as a process for heavier gauge welding and the 75/25 is something to have handy for that process.
I'm actually in the middle of this decision myself.Louie1961 wrote: ↑Tue Dec 29, 2020 9:52 pm if it was my money, I am spending the extra $600 and getting the higher amperage and duty cycle of the MM255 every time, and most especially if you plan on welding aluminum. The 25% duty cycle @ 200 amps of the ProPulse just wouldn't cut it for me. I like to play with dual shield flux core which normally runs at about 240 amps. Double pulse/pulse-on-pulse adds nothing to the weld integrity, it is strictly aesthetic, and therefore it has no value to me at all. I also really like the idea of the MM255 being tuned/having a welding program to do short circuit MIG with 90/10 gas, thereby offering the possibility of using one gas for both short circuit and pulse spray. I am not sure if the pro pulse has that capability or not.