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  • Question on the Millermatic 350P

    Hi everyone. I've been thinking about upgrading from my Millermatic 251 to a Millermatic 350P. There are times in my shop I could use the extra amps of the 350P and some of it's added features. My question is with the gas. On the 251 I'm using Blueshield 8 which I believe is 75-25 mix?

    The way I understand it is to use the pulse or spray feature on the 350P you need to use 90-10 gas. Can I get by with just the 75-25 or 90-10 gas? I didn't want to lease another bottle of gas so I'm trying to figure out the best gas to go with if I decide to purchase the 350P. If I do get the 350P I'll be using my spoolgun but will be welding mostly steel with the welder. Any opinion would be greatly appreciated. Thanks!
    Last edited by wildfire; 03-04-2010, 08:24 AM.
    Miller matic 350P
    Millermatic 252/Spool gun
    Miller Spectrum 875 plasma
    Miller Dynasty 200 DX
    Miller Coolmate 3
    Miller Elite ( INFERNO Digital)
    2008 Miller Trailblazer 302/Custom trailer
    Custom DX200 Crazy Cart
    Sofia 13 X 30 Lathe
    MODERN 10X50 knee mill with Fagor 40i DRO
    Craftex 30 Mill/Drill

    All this stuff below was done with Miller gear


    My YouTube vids:

    http://www.youtube.com/user/7863348

    Flickr photo's:
    http://www.flickr.com/photos/[email protected]/sets/

  • #2
    75-25 works fine, i've never used 90-10 with mine.
    Maxstar 300dX-first 2500 takes it
    MM350p+reach+python=moneymaker
    hypertherm 1250
    ellis 1800 saw
    unihydro 42 ton punch
    Wish list
    xmt 350+s74 feeder
    dynasty 350
    ellis drill press
    ellis belt grinder

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    • #3
      You're thinking of buying a $4,000+ machine and you're worried about having more than one bottle of gas available?

      C25 (75%Ar/25%CO2) will NOT work in spray mode or pulsed mig mode. C10 will give you more spatter in short arc.
      Syncrowave 250 DX Tigrunner
      Dynasty 200 DX
      Miller XMT 304 w/714D Feeder & Optima Control
      Miller MM 251 w/Q300 & 30A SG
      Hobart HH187
      Dialarc 250 AC/DC
      Hypertherm PM 600 & 1250
      Wilton 7"x12" bandsaw
      PC Dry Cut Saw, Dewalt Chop Saw
      Milwaukee 8" Metal Cut Saw, Milwaukee Portaband.
      Thermco and Smith (2) Gas Mixers
      More grinders than hands

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      • #4
        Originally posted by SundownIII View Post
        You're thinking of buying a $4,000+ machine and you're worried about having more than one bottle of gas available?

        C25 (75%Ar/25%CO2) will NOT work in spray mode or pulsed mig mode. C10 will give you more spatter in short arc.
        No I'm not worried about more bottles . I just don't have the extra space to have bottles around. I got the O&A bottles. One argon bottle and one Blueshield 8 bottle. **** I'll soon have the shop fillered up with bottles

        Thanks!
        Miller matic 350P
        Millermatic 252/Spool gun
        Miller Spectrum 875 plasma
        Miller Dynasty 200 DX
        Miller Coolmate 3
        Miller Elite ( INFERNO Digital)
        2008 Miller Trailblazer 302/Custom trailer
        Custom DX200 Crazy Cart
        Sofia 13 X 30 Lathe
        MODERN 10X50 knee mill with Fagor 40i DRO
        Craftex 30 Mill/Drill

        All this stuff below was done with Miller gear


        My YouTube vids:

        http://www.youtube.com/user/7863348

        Flickr photo's:
        http://www.flickr.com/photos/[email protected]/sets/

        Comment


        • #5
          A little OT, but not that much

          With all the talk on MIG welding gas mixes, I thought I'd show this link:
          http://cgi.ebay.com/McDantim-TM200-T...item3c9f9a8bb7

          and

          http://www.mcdantim.com/catalog.html

          So the next time your beer tastes a bit low on nitrogen, now you know why.
          Con Fuse!
          Miller Dynasty 350
          Millermatic 350P
          -Spoolmatic 30A

          Hypertherm PowerMax 1000G3
          Miller Multimatic 200 - awesome portable MIG (and stick and TIG)
          Miller Maxstar 200DX - portable TIG and stick

          Comment


          • #6
            Well I sorta had that same scenrio myself. I wouldn't sweat it. You can short arc and use straight mig if needed ok with the 90/10. Once you get up and running with the machine you won't miss 75/25 IMO.
            If you get some stuff that you really gotta have the 75/25 then you can worry about getting one. Myself I cannot imagine using my 350P and not using the GMAW-P phase of operation.
            The 350P does run aswum on straight mig with 75/25 and on aluminum as well....you just find yourself going back to pulse again and again.
            I have one little bottle like a size 50 or whatever with 75/25 for those situations, but I have a 300 of 90/10
            I feel like the difference between straight mig and GMAW-P is every bit as big as the difference between AC tig with a transformer and an inverter like the Dynasty, but you gotta have the right gas to make the magic happen.

            www.facebook.com/outbackaluminumwelding
            Miller Dynasty 700...OH YEA BABY!!
            MM 350P...PULSE SPRAYIN' MONSTER
            Miller Dynasty 280 with AC independent expansion card
            Miller Dynasty 200 DX "Blue Lightning"

            Miller Bobcat 225 NT (what I began my present Biz with!)
            Miller 30-A Spoolgun
            Miller WC-115-A
            Miller Spectrum 300
            Miller 225 Thunderbolt (my first machine bought new 1980)
            Miller Digital Elite Titanium 9400

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            • #7
              How are you fabricating anything if you don't have room for even one bottle? A bottle only takes up about half a square foot of floor space.

              You can use the 90/10 gas for all processes on the 350P. You won't need the 75/25 gas. Use up your 75/25 and have it re filled with 90/10 next time you fill it.
              Millermatic350P/Python, MillermaticReach/Q300
              Millermatic175
              MillermaticPassport/Q300
              HTP MIG200
              PowCon 300SM, MK Cobramatic
              ThermalArc 185ACDC, Dynaflux Tig'r, CK-20
              DialarcHF, Radiator-1
              Hypertherm PowerMax 380
              Purox oxy/ace
              Jackson EQC
              -F350 CrewCab 4x4
              -LoadNGo utility bed
              -Bobcat 250NT
              -PassportPlus/Q300
              -XMT304/Optima/Spoolmatic15A
              -Suitcase8RC/Q400
              -Suitcase12RC/Q300
              -Smith oxy/propane
              -Jackson EQC

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              • #8
                Originally posted by Desertrider33 View Post
                How are you fabricating anything if you don't have room for even one bottle? A bottle only takes up about half a square foot of floor space.

                You can use the 90/10 gas for all processes on the 350P. You won't need the 75/25 gas. Use up your 75/25 and have it re filled with 90/10 next time you fill it.
                That is pretty much what I was driving at. But I have had good success with 75/25 on very thin metal on straight mig whereas the 90/10 was a bit too hot for my taste. I kinda feel like having lot's of different gasses on hand is about as cool as having a bunch of welders

                www.facebook.com/outbackaluminumwelding
                Miller Dynasty 700...OH YEA BABY!!
                MM 350P...PULSE SPRAYIN' MONSTER
                Miller Dynasty 280 with AC independent expansion card
                Miller Dynasty 200 DX "Blue Lightning"

                Miller Bobcat 225 NT (what I began my present Biz with!)
                Miller 30-A Spoolgun
                Miller WC-115-A
                Miller Spectrum 300
                Miller 225 Thunderbolt (my first machine bought new 1980)
                Miller Digital Elite Titanium 9400

                Comment


                • #9
                  Originally posted by FusionKing View Post
                  That is pretty much what I was driving at. But I have had good success with 75/25 on very thin metal on straight mig whereas the 90/10 was a bit too hot for my taste. I kinda feel like having lot's of different gasses on hand is about as cool as having a bunch of welders
                  I agree! I dont use the 350P for short circuit on thin metal though, so no need for the 75/25 there. I use the HTP with 75/25 or the MM175 with 85/15 and they both do a good job on short circuit gauge metal.
                  Millermatic350P/Python, MillermaticReach/Q300
                  Millermatic175
                  MillermaticPassport/Q300
                  HTP MIG200
                  PowCon 300SM, MK Cobramatic
                  ThermalArc 185ACDC, Dynaflux Tig'r, CK-20
                  DialarcHF, Radiator-1
                  Hypertherm PowerMax 380
                  Purox oxy/ace
                  Jackson EQC
                  -F350 CrewCab 4x4
                  -LoadNGo utility bed
                  -Bobcat 250NT
                  -PassportPlus/Q300
                  -XMT304/Optima/Spoolmatic15A
                  -Suitcase8RC/Q400
                  -Suitcase12RC/Q300
                  -Smith oxy/propane
                  -Jackson EQC

                  Comment

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