Power i-mig 275P - Page 2
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  1. #26
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    Mar 2014
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    260

    Re: Power i-mig 275P

    Here are a few more pics, they aren't the greatest. She makes pur-tee welds, though I admit that a chimp could make this kind of weld look good. A fillet along the cabin base to the sheer flat, 1/8" to 3/16":

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  2. #27
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    Mar 2014
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    260

    Re: Power i-mig 275P

    Ooops! This is a better pic:


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  3. #28
    Join Date
    Dec 2015
    Posts
    996

    Re: Power i-mig 275P

    Wow!

    Like butter!

    What about diamond plate for decking in those kind of boats?
    Peace to you all,
    Christian Livingstone

    www.youtube.com/newjerusalemtimes

    Everlast 210EXT AC/DC (2015)
    CAT250D 200 amp DC TIG/Stick/Plasma

  4. #29
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    Mar 2014
    Posts
    260

    Re: Power i-mig 275P

    Here's a couple more pics. The more I get into the features of this machine, the more I like it! This is a 42 gal. fuel tank done corner-to-corner out of 3/16" material. It's done with a no weave single pass at 23V. The IPM I can't give as that would be just a guess though the pot at the gun is a little over 5. Other settings I'd only add if anyone was interested. Excellent root penetration. Looks low in hydrogen bubbles, the bane of 5000 series welding. With my old machine I would do this weld with a weave.

    Other notes as I get more time in: way less boogers in the nozzle than before! No more having to snap off the wire at the end of hot welds. 1/10V increment adjustment is wonderful. IMO, this really a winning machine for The Green Team. Can't speak to the new gun, but if it comes close to the Miller this thing will be popular. I have many, many friends that have paid a lot more for a machine to weld AL that is not nearly as capable.

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  5. #30
    Join Date
    Aug 2015
    Location
    Alaska
    Posts
    65

    Re: Power i-mig 275P

    Yofish,

    Thanks for the great pix and the continuing review. The welds look very nice. It is obvious that you know what you are doing, and talking about, by your work. Coming along quickly as well. Those outside corner welds, even in 3/16" are a real test. I challenged a Fronius weldor rep demoing their pulse welder at FabTech this year on how it welds outside corners because all he was showing in his demo was inside fillets. Took him about 10 minutes or so to get an acceptable weld but he got some reasonable results. Nothing as nice as what you have on the tank though. Easy to burn through and make them a mess but a good consistent machine makes it easier. I can do them ok mostly but not nearly so nice an uniform, born without rhythm, better with TIG than MIG on those. Nice to hear the reviews on the welder. Like I said earlier, I have a couple friends in the market so good to get and experienced review. Keep the pix and good words coming as you get the chance and don't forget to post a finished boat photo or two.

  6. #31
    Join Date
    Mar 2014
    Posts
    260

    Re: Power i-mig 275P

    Quote Originally Posted by Shipj0 View Post
    Yofish,

    Thanks for the great pix and the continuing review. The welds look very nice. It is obvious that you know what you are doing, and talking about, by your work. Coming along quickly as well. Those outside corner welds, even in 3/16" are a real test. I challenged a Fronius weldor rep demoing their pulse welder at FabTech this year on how it welds outside corners because all he was showing in his demo was inside fillets. Took him about 10 minutes or so to get an acceptable weld but he got some reasonable results. Nothing as nice as what you have on the tank though. Easy to burn through and make them a mess but a good consistent machine makes it easier. I can do them ok mostly but not nearly so nice an uniform, born without rhythm, better with TIG than MIG on those. Nice to hear the reviews on the welder. Like I said earlier, I have a couple friends in the market so good to get and experienced review. Keep the pix and good words coming as you get the chance and don't forget to post a finished boat photo or two.
    Thanks for the kind comments, after 40 years or so I guess one should be OK at a craft. I swear, I feel like I'm just starting to get the hang of it.

    The thing about an outside corner is that the fit up is critical; it is a near must to have no gaps as that's what causes blowouts. 23V is pretty high for that weld on 3/16' so one must be on their game and enough tacks to keep it from going oingo-boingo. Honesty, I could not make that weld without help, at least as to make it look good, have decent penetration and not sag on the downside. I made a tool I call a 'Hog Trough' that the gun slides along and does about 22" from start to stop. Here's a link to an old thread about building a skiff on WW that shows the device:

    http://weldingweb.com/showthread.php...um-skiff/page8

    BUT! The high volts and the right wire speed makes for a fast weld and as long as there is root penetration, it's very satisfactory for a one-side weld. I've never had one puke, but I'm only talking about 100 gals. or so, with no interior welding. Takes a little practice but it's the only way I do it anymore. The only difference is with this machine, I feel very confidant in the no-weave whereas I didn't before. As a matter of fact, it looks so good that I'm rather surprised. Call it 'semi-automatic' welding! Us geezer's need all the crutches we can lean on, believe me. As a side note, I don't buy as many gloves as I used to by a long shot. Doing a weld like that back in the day, I was only good for maybe 10" before I would be out of position. Stop, cut out stop and restart. I do NOT backstep a tank because of the quality of the frozen pool at the stop. I'm guessing that that 22" weld takes about 30 seconds the way I'm set up. I remove ALL of the stop with a die grinder and single cut oval carbide bur, then start over the stop again. I've never had a leak in a run; only starts and stops which I tig over for security. This tank had no leaks and was done much faster than had it been all tigged, much faster.

  7. #32
    Join Date
    Mar 2014
    Posts
    260

    Re: Power i-mig 275P

    Here is a pic of my absolute unfavorite weld to do on a skiff, an angled (10 degrees) downhill. I cringed, when after saving it for the very last, was faced with it and my old setup. It's probably the most visible weld from outside the skiff and thus should look tight. I don't have the hand I once did but with pulse it made it rather easy and bright. Before it was short arc (lumpy) or hot and you'd have to go like a striped-assed ape and hope not to drop it. Being on a 8' ladder doesn't make it any easier. I/8" lap, 21.7V:

    I plan on having it out of the shop tomorrow if it's not snowing sideways and will have some final pics. My happy day!


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  8. #33
    Join Date
    Nov 2008
    Location
    south GA where its hot in summer and cold in winter
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    4,528

    Re: Power i-mig 275P

    What kind of pulse settings are you running? Wire size? I know wire speed is a little different for you but since it is a volt pulse, would you care to describe how it is helping or what you are seeing that is different? I know our customers would like a little personal experience info, from someone who might be taking a second look.
    Esab Migmaster 250
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  9. #34
    Join Date
    Mar 2014
    Posts
    260

    Re: Power i-mig 275P

    Well, just before the start of a snow storm I was able to deliver it to the victims. My most favorite part is being DONE along with a fresh supply of money in the bank. If it wasn't for the need of it life would be pleasant most all of the time.

    All is well in my Everlast world too, I'm very happy to say. I'll have more about the machine as well; I'm going to do some dedicated futzing with it on my time off.

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  10. #35
    Join Date
    Oct 2016
    Location
    USA
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    24

    Re: Power i-mig 275P

    Thanks for sharing Yofish, very interesting.

  11. #36
    Join Date
    Mar 2014
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    260

    Re: Power i-mig 275P

    Putzing around today, cleaning the shop and enjoying a sunny day, at the end I did a little test using 4043 .035" wire. I'm interested in trying to use it on cabins and such, nothing below the water line, because it behaves nicely and makes, like, no smoke. So I took a couple pieces of scrap from the pile and did a 40" outside corner on 1/8" 5052, which, my research sez is an acceptable combination. I have never used the alloy ever, for anything, but my lungs are interested; when I'm incinerated at the end, the kids will will wonder what to do with this puddle of aluminum is at the bottom of the ash box.

    Anyway, here we have the setup of the Miller box and the Green Machine set @ 21V with said weldment:

    For some reason WW keeps inserting every pic downloaded multiple times so this will be multiple posts because after three times, I'm OVER!

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  12. #37
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    Mar 2014
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    260

    Re: Power i-mig 275P

    Now we see the root penetration which is a little more than I'd like to see but can be tuned, this was a few mins of tuneup only. BTW, this is a straight pass, no weave, 21V:

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  13. #38
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    Mar 2014
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    260

    Re: Power i-mig 275P

    So now a little testing. We see that folded on itself that it maintains structure, nothing bad there, but folded flat it exhibits weakness in that it rather 'snaps' along the weld. This is not too surprising considering the filler alloy.

    Interestingly, notice how it vectors off to the opposite side when, in this section, the stress encounters a backside tack! That surprised me and will make me think. Had this weld been done with 5356 (I've tested many times) the result, assuming good welding practice, would be that the folding in would be the same but the folding out would have, at best, shown surface tearing at the toes along the HAZ:

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  14. #39
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    Mar 2014
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    260

    Re: Power i-mig 275P

    For grins, the next thing I'm gonna do is load a spool of 1/16" 5356 into the Green box and see how it pushes through the supplied mig gun. I have no expectations but could be fun/interesting. I do know that the wheel builders do that - short whip - and push only. There is so much I don't know about all of this welding thing.

  15. #40
    Join Date
    Dec 2015
    Posts
    996

    Re: Power i-mig 275P

    Yeah,

    I've been wondering if that would work well enough on your unit too.

    I mean, if I do get a pulse MIG unit at some point, it might be the slightly less robust 251Si unit. And I'd definately try running some aluminum wire in it without a spoolgun.
    Peace to you all,
    Christian Livingstone

    www.youtube.com/newjerusalemtimes

    Everlast 210EXT AC/DC (2015)
    CAT250D 200 amp DC TIG/Stick/Plasma

  16. #41

    Re: Power i-mig 275P

    I just got a 10lb roll of 5556, .045", that I'm going to try on my MTS251Si. I've got a teflon liner on the way, too. The 5556 is very strong and I think it should work fine on the stock 10 foot whip. Worst case, I'll have to get a spool gun and transfer it to little spools!

    As an aside, I've had this welder for less than 2 months, and it is great. My son in law is a professional welder, and it impressed him. He's used to huge Millers, so that's saying something.
    Last edited by Timbob; Today at 12:58 PM. Reason: I'm an idjut.

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