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I've been drooling a year or two. When everybody was quarantined my friend who had used a lincoln tombstone buzz box his whole life except borrowing my MM252 a couple times bought a MM255. We talked on the phone a few times about the subject. He said he really wanted a MM252 but couldn't get one. All they had available at Airgas was MM255. That wasn't what he wanted. I offered to sell him mine, he declined, they had ordered the MM255. He was having misgivings, concerned it'd be too complicated to learn. I never have had a chance to try his. Lately, there have been discussions. The price will go up soon.Any advice how to use it?An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:Advice? Read the half dozen or so posts I have posted recently.
Reply:Advice:1. Get 90/10 gas. You need a higher argon level than 75/25 to do spray or pulse (I know some people will dispute this but for the sake of argument let's assume this is correct). The machine can do short circuit MIG with 90/10 and has programmed settings for it. It works very well. Welds short circuit like a dream on 90/10, and 90/10 is recommended for pulse. I would not bother running C25 unless you need it for dual shield or something like that. 2. Understand from the get go that autoset works great on short circuit and works great on pulse for material >1/4 inch. Not so much for thinner material on pulse. Not to fear, manual settings work fine.3. Also understand that with pulse MIG you have a new learning curve to conquer. 4. Save all your drive rollers from your MM252, they will fit the MM2555. There are 3 settings you need to master for pulse MIG: wire feed speed, arc length and arc control (previously called sharp arc in the older MM350P). WFS controls the amps/heat, the arc length is the same as "trim" on Lincoln units and tweaks the voltage to increase or decrease the arc length. This is useful when you are welding different joints. Arc control changes the pulse frequency and in theory changes the width of the arc without changing the length of the arc;. I say in theory, because I find that sometimes I have to adjust arc control more than I have to adjust arc length to get rid of the "crackles"6. Pulse MIG is HOT. Don't get your knuckles burnt!7. Practice8. ENJOYMiller Multimatic 255
Reply:Miller Multimatic 255
Reply:Miller Multimatic 255
Reply:Miller Multimatic 255
Reply:Miller Multimatic 255
Reply:Miller Multimatic 255
Reply:To be happy with a vertical weld is sort of the holy grail for me. Stick, I'm not embarrassed. TIG, it's sort of fun. MIG, I've never been real satisfied. Thin stuff, I tend to run downhill, I'm adequately happy. inside corner joints, somehow Jody's triangle manipulation drips for me. Weaving like I'd do with stick piles up in the middle. I use a trigger pulse to dab small welds alternating left 7 right. Somehow it looks like a weave. Another is a simple groove weld I pulse that to avoid a mess.The spray transfer pulse up is most intriguing.An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:Real Big bullet to bit.Dave
Originally Posted by Willie B
I've been drooling a year or two. When everybody was quarantined my friend who had used a lincoln tombstone buzz box his whole life except borrowing my MM252 a couple times bought a MM255. We talked on the phone a few times about the subject. He said he really wanted a MM252 but couldn't get one. All they had available at Airgas was MM255. That wasn't what he wanted. I offered to sell him mine, he declined, they had ordered the MM255. He was having misgivings, concerned it'd be too complicated to learn. I never have had a chance to try his. Lately, there have been discussions. The price will go up soon.Any advice how to use it?
Reply:I dont know anything about the 250ish series. I have 210x and 350x series machines. As far as pulse steel mig gas is concerned. Most places want you to use a 98/2 mix. Oxy or CO2 mix. You can pulse with 90/10. You can try to pulse with 75/25. Its the same as saying, spray mig works well on 75/25. My 210 can spray 030 wire on 75/25, doesnt mean i should. Also, a VW bettle can tow a gooseneck trailer, as shown in the trailer fail thread, but realistically it cant.As far as I can see with my miller 350p and other machines, the quick charts seem to be pretty close to parameters. I personally dont touch auto set because it seems like a calculator, garbage in, garbage out... good in, good out.
Reply:
Originally Posted by smithdoor
Real Big bullet to bit.Dave
Reply:
Originally Posted by Country Metals
I dont know anything about the 250ish series. I have 210x and 350x series machines. As far as pulse steel mig gas is concerned. Most places want you to use a 98/2 mix. Oxy or CO2 mix. You can pulse with 90/10. You can try to pulse with 75/25. Its the same as saying, spray mig works well on 75/25. My 210 can spray 030 wire on 75/25, doesnt mean i should. Also, a VW bettle can tow a gooseneck trailer, as shown in the trailer fail thread, but realistically it cant.As far as I can see with my miller 350p and other machines, the quick charts seem to be pretty close to parameters. I personally dont touch auto set because it seems like a calculator, garbage in, garbage out... good in, good out.
Reply:I know I'm a lot bigger welder, but i outright own 7 Q size argon, 2 Q size 75/25, 2 Q size tri mix, 1 S size of each 75/25, argon, and tri mix. I rent about 20 T size tanks. We do a lot of in plant work, so dolling large tanks just sucks.My supplier allows me to purchase S size tanks where many suppliers say Q is the largest.Q is 80 size.My supplier just exchanges them, no hydro test required.
Reply:I found that at least in the CT area, no one and I really mean no one, has 90/10 mix in an 80 cu ft tank. I could get it in a larger tank (125 I think it was) but it was going to be a lease and it was the same price as the T tank (330 cu ft) from Maine Oxy. So I just leased from them. For an extra $20 or so, they will deliver to my home. And if they are coming out they will bring anything you want all for the same $20 delivery charge. So I usually get some filler wire, or contact tips, etc. each time they deliver. They are so convenient they are like the Amazon of welding supplies. I think you will definitely want the 90/10 gas. This machine will not pulse or spray very well on 75/25Miller Multimatic 255
Reply:I live 20 odd miles one way from gas suppliers. Always rented tanks more than 52 years. I've used the logic that I live so far away, need a different truck than everyday to get gas, less trips is better. I wish there were fewer varieties of gas needed.In Rutland we had a small intra state welding supply. They've been bought out a few times. These days they are Airgas. A locally owned store popped up, ran a few years, then were acquired by Maine Oxy. Main Oxy's prices are less predatory than Airgas, but I have tanks from each.An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:When I went to the miller training facility back when it was 30 minutes away in swedesboro nj, the head guy taught me about pulse stainless gas mixes. He told me there was a west coat and a east coat mix. I said which is better. He said the west coast mix was better. I said then why is there 2 different mixes. He said it's just how it is. The west cost mix for pulse stainless is a custom mix around here in NJ. I keep 2 bottles of it for easy swapping.The only difference is they switch the argon and helium. West coast is helium heavy.I've been thinking about a gas mixer as it would pay for itself so I don't need multiple mix bottles.Yes it is nuts if you look into how many gas mixes. Its also funny when you read people's online stuff that says 76/24 welds way better then 75/25. And 98.000000008/1.9999999 welds better then 98/2.It's so funny. As unless you order lab grade gases. It's off 1 to 2 % at times anyways
Reply:
Originally Posted by Country Metals
When I went to the miller training facility back when it was 30 minutes away in swedesboro nj, the head guy taught me about pulse stainless gas mixes. He told me there was a west coat and a east coat mix. I said which is better. He said the west coast mix was better. I said then why is there 2 different mixes. He said it's just how it is. The west cost mix for pulse stainless is a custom mix around here in NJ. I keep 2 bottles of it for easy swapping.The only difference is they switch the argon and helium. West coast is helium heavy.I've been thinking about a gas mixer as it would pay for itself so I don't need multiple mix bottles.Yes it is nuts if you look into how many gas mixes. Its also funny when you read people's online stuff that says 76/24 welds way better then 75/25. And 98.000000008/1.9999999 welds better then 98/2.It's so funny. As unless you order lab grade gases. It's off 1 to 2 % at times anyways
Reply:I have debated moving from the 252 to the 255 pulse. I can write off the cost of the new plus sell the 252 for close to what I paid for it. I would still be out a couple thousand dollarsIs it a "need" or a "want" is the problem. . Sent from my SM-G996U using TapatalkMillermatic 252 MIGMiller Dynasty 200DX TIGMiller Spectrum 625 PlasmaAltas 12x36 Metal LatheBridgeport Milling Machinewww.psacustomcreations.com
Reply:
Originally Posted by psacustomcreations
I have debated moving from the 252 to the 255 pulse. I can write off the cost of the new plus sell the 252 for close to what I paid for it. I would still be out a couple thousand dollarsIs it a "need" or a "want" is the problem. . Sent from my SM-G996U using Tapatalk
Reply:90% of my aluminum work is with 1/8" or thinner. I use TIG for that I do have a push pull gun I can connect to the 252 for thicker aluminum Don't know about the clock but I do know we have one here in Fredericksburg Sent from my SM-G996U using TapatalkLast edited by psacustomcreations; 3 Weeks Ago at 01:48 PM.Millermatic 252 MIGMiller Dynasty 200DX TIGMiller Spectrum 625 PlasmaAltas 12x36 Metal LatheBridgeport Milling Machinewww.psacustomcreations.com
Reply:Miller Multimatic 255
Reply:Miller Multimatic 255
Reply:As the owner of a MillerMatic 255, I would like to share that it is an amazing welder.I bought mine in part because of a review by dr clyde NEW Millermatic 255 Welder Review | The Garage JournalBecause of his review, and with input from my local weld supply store, I pulled the trigger.I run 90/10 gas almost exclusively for steel. I am surprised at how quickly pulsed spray has become my go-to.When I have done cut and etch, I have been impressed with the penetration.If you are in the market for this class of machine, you have made a good choice (I believe you said you had already pulled the trigger).Let us know how you like it.
Reply:Gotta love getting a new toy like this. Enjoy!My 37 year old son disapproves! He had been pressuring me to upgrade. I talked to a manager at Maine Oxy. He misread my interest. I don't make my living with my welders. He felt an old school Lincoln transformer MIG sounded more my speed. He failed to convince me.I had little understanding of pulse MIG, now I've studied a bit, watched a few suggested videos, now I want it!! Seth has now cemented his opinion; he hates spray MIG!That's all the endorsement I need. For Seth, all new ideas have to come from him. Those coming from dad are wrong.I forge ahead into new science with my son booing. I'm now in my comfort zone!.An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:And I thought wives were there for a constant source of disapproval... live and learn...The harder you fall, the higher you bounce...250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:
Originally Posted by whtbaron
And I thought wives were there for a constant source of disapproval... live and learn...
Reply:Your electric bill will thank you for purchasing an older transformer machine.You may cry from time to time. So good purchase that way for sure.
Reply:I've enjoyed my machine a lot. I use 90/10 only and I see no downside to it. The only con is accessibility of 90/10 for some people but it isn't an issue here.The one thing I notice with my machine is if you choose to use autoset, after 3/16" the numbers are ridiculously off. The weld is smooth up until that 3/16 mark and as soon as you go to 1/4" it becomes violent and not smooth the way they have it setup.
Originally Posted by Country Metals
Your electric bill will thank you for purchasing an older transformer machine.You may cry from time to time. So good purchase that way for sure.
Reply:The one thing I notice with my machine is if you choose to use autoset, after 3/16" the numbers are ridiculously off. The weld is smooth up until that 3/16 mark and as soon as you go to 1/4" it becomes violent and not smooth the way they have it setup
Reply:
Originally Posted by Louie1961
Zach are you in regular/short circuit MIG mode when that happens? I noticed something similar. In Autoset MIG (not pulse) anything 1/4 inch or above the settings are designed to go into spray mode (you'll notice a huge bump in voltage between 3/16 and 1/4). I think that was a bad assumption on their part. The easy answer is to go into manual mode and just dial the voltage back down.I think the autoset feature has a few weak points. I am not fond of autoset when trying to pulse weld anything less than 1/4 inch. But I also think autoset is a bit of a crutch for non-pros like me. I imagine people who weld a lot just live their life in manual mode on this machine.
Reply:Good God, that thing is twice as heavy as an XMT 350 Sent from my iPhone using Tapatalk
Reply:
Originally Posted by precivilization
Good God, that thing is twice as heavy as an XMT 350 Sent from my iPhone using Tapatalk
Reply:I thought about that, but I doubt the feeder components are 70 pounds
Sent from my iPhone using Tapatalk
Reply:
Originally Posted by precivilization
I thought about that, but I doubt the feeder components are 70 pounds
Sent from my iPhone using Tapatalk
Reply:It's only 80 lbs without the cart. How heavy is an XMT?
Reply:
Originally Posted by Louie1961
It's only 80 lbs without the cart. How heavy is an XMT?
Reply:Mine had the optional gas solenoid so 82 pounds 7 ounces. Sent from my iPad using Tapatalk:
Reply:
Originally Posted by Lis2323
Mine had the optional gas solenoid so 82 pounds 7 ounces. Sent from my iPad using Tapatalk
Reply:
Originally Posted by precivilization
Lol.. I have no need for xmt, but one showed up near me for a what I think is a cheap price ($410), so I got it. Only used it for stick tho. Do you have a garage related thread? I was looking for it the other day but wasn't able to find anything about the subject.Sent from my iPhone using Tapatalk
Reply:I don't want to hijack this thread, but really nice stuff you got there. I wasn't asking about an XMT specific thread, I just wanted to take a tour of your shop, get some ideas of how you do things there and drool over all the goodies you got in your shop.
Reply:I agree about getting a good deal on the power, so cheap even if a guy didnt need it tempted to buy.www.urkafarms.com
Reply:I have heard guys say they are not all that impressed with auto set. To tell the truth I even go so far on small machines to like or not mind simple taps. So easy to hit the perfect same setting and only got to fuss with 1 knob. A good operator can fuss with it but really not that big a deal. I remember testing the 210 with the 7 speed and there was a funny spot between one when looking for the perfect spot but a guy had to really work to find it, Dan ion another forum said the same thing, could have used a 9 speed there but it wasnt a deal breaker. My SPT only has 5 speed and not sure how it works 023 but the 030 its tuned for is percet in B, C and D with thin medium and thick as she go. The 140 the same way with 023, right spot on, guy designed it 30 yrs ago hit it spot on and they didnt fool with it.www.urkafarms.com
Reply:Set it up as per Louie's findings to dial it in, and you'll love pulsed-spray on anything 1/16" and thicker.
1st on WeldingWeb to have a scrolling sig!
Reply:I have heard guys say they are not all that impressed with auto set.
Reply:I am back where I started to some extent, 6011 10A too hot. Long whip and pause seal welding light sheet, bush hogs and such. Almost no one notices the welding and I do consider some appearance but so much no one cares as long as it works, they dont notice, been doing it long enough no one gives it a thought like they would overlook a 20 yr old. Some or most cleaned and finished to some extent and I can grind up and not make it show, I clean spatter. Other day didnt really clean steel, while the weld is ruffer the bb dont stick so bad as where its ground clean,,, ha Its like a lot of other tools after a while, not upgrading anymore, got a way to do it, dont care and not behind it at a rate it makes more money and it aint a hobby. I dont make minor adjustments most of the time, dont turn in position, do up down and around. Gaps and cracks get filled. Using the same machines, auto has no appeal, I spose its ok but I aint gonna upgrade to get it. If I was a real daily driver putting a name to fussy work I might move to small inverter run 6010 right. Rest of it doesnt make much difference to me even if it is better.Last edited by Sberry; 2 Weeks Ago at 10:26 PM.www.urkafarms.com
Reply:9 months ago used my 255 10 hrs, havnt used it since. Had to fill a gas bottle a while back but been a while since I put a spool of wire in, neighbor give me 50# 1/8 6011 and I been burning them right to stubs, used 10 of them yesterday. Wish I could make some more by simply buying a new machine but I cant. Whoops, wrong pic, that is overhead.
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Reply:Last one trying to dial in the pos 255 to remove spatter, 1 v difference. If I ran this every day wouldnt hesitate to get a machine that worked a little better than the one in last 2 pics, just too much fuss from the driver.
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Last edited by Sberry; 2 Weeks Ago at 10:44 PM.www.urkafarms.com
Reply:Such a bundle of joy!
Originally Posted by Sberry
Last one trying to dial in the pos 255 |
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发表于 2022-9-16 15:52:18