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**cope** · 05-20-2004, 08:02 PM

Re: Set Up

Originally posted by JWELD
Jeez:
I was out out of pocket, off the forum as my password or something would never work. I struggled with it for 2 weeks.
I called Miller and they called me back the same day and got it fixed in minutes.
As always, Miller has never yet let me down.

Question:

Having a MM 135, MM172, MM Vintage, I would like to set the three up to weld only steel and cover all the thickness ranges without a lot of changes.
I just got the MM135 as I know it is a great portable for "non-critical welds". I am a novice welder in comparison to you guys, but I have seen a lot of folks get over thier heads with too small a machine.

I intend to set the MM172 with .024 and the Vinatge with .035 both with CO2 mix.
Should I set the Vintage up instead to do only "spray" as this will be for my thick welds only.

Is this a fair question.

Didn't mean to ramble on , but it's good to be back!!

Thanks

If you plan to spray, the Vintage is the obvious choice. It can be set up for spray and if need be all you have to do to short arc is change out the gas. Three machines; all in all a nice problem to have !

**Canuck** · 05-20-2004, 11:43 PM

Jweld have thought about having one machine set up for portable repairs with flux cored wire or maybe even some tri mix for doing SS. Setting the vintage for spray transfer is a really good idea. Would it not go into short circut with 98/2 gas and just a lower machine setting? This is sort of off topic but could a MM210 or 251 be set up for dual shielded wire or do they not pack the punch needed?

**cope** · 05-21-2004, 05:05 AM

Originally posted by Canuck
Jweld have thought about having one machine set up for portable repairs with flux cored wire or maybe even some tri mix for doing SS. Setting the vintage for spray transfer is a really good idea. Would it not go into short circut with 98/2 gas and just a lower machine setting? This is sort of off topic but could a MM210 or 251 be set up for dual shielded wire or do they not pack the punch needed?

Either the 210 or 251 could be set up that way.

**HAWK** · 05-21-2004, 05:28 AM

Originally posted by Canuck
Would it not go into short circut with 98/2 gas and just a lower machine setting? This is sort of off topic but could a MM210 or 251 be set up for dual shielded wire or do they not pack the punch needed?

98%argon/2%oxygen will short circuit, but the beads are more convex. A machine like the XMT, ALT or Invision with inductance control will go a long way in wetting out the bead. My personal choice for spray arc is 92%argon/8% CO2. It is hot enough to spray while providing reasonable penetration with short arc. It will spray with .035" ER70S-6 around 24 volts.

This is a mild steel set up and won't work for SS. The 98ar/2%oxygen will spray stainless fine, but once again the short circuit beads will be ropey and convex without the help of a good inductance control.

Cope is right on the 210 and 251 and dual shield. The 251 will run .045" ds fine, but .035" ds is the reasonable limit with the 210.

**klsm54** · 05-21-2004, 07:25 AM

I would agree with HAWK's choice of gases. 92/8 is a great choice if you want to go back and forth between Spray and short arc on mild steel.

Dual shield wires work great on a Millermatic 251, .035 is really great, and .045 also does good. On the 210, stick to .035. Dual Shield wires work within a much broader set of parameters than solid wires. The Millermatic's are a little lacking in voltage to reach the optimum range for dual shield wire, that is why I think you are better off with .035, even in the 251.

**Canuck** · 05-21-2004, 08:22 PM

Thanks for the answer I might be looking at a 251 in while all though probably not too soon would like to have the option to run dual shield. I really like dual sheilded wire for it's good penetration and the fact that it is just pretty cool stuff

**Paul Seaman** · 05-21-2004, 11:47 PM

Canuck:
I have run both on the mm210 and any given day the mig is easier less finish work. If you work on dirty material, flux core is the choice but if penetration is the only concern then use a hotter shielding gas and go for it. I still use flux core for the race track but little else. Indoors it leabves the air too thick and heavy, I've got enough breathing trouble without adding to it. Question is how heavy are you planning to run on a regular basis. I've run 3/8 steel plate fillet welds with great penetration using 75/25 and its not a hot gas, I just work a little slower and am more patient since this is the upper end of its rating. I've never hit hte duty cycle and kicked out the thermal cutout so I'm working within its capabilities. This is not production line welding and the mm210 is not designed for 100% arc on production. The MM 210 is a great machine and the mm251 is also but if occasionally I need to jump into 1/2" plate It will do the job. The MM251 has a lot of features not found on the mm210 but bang for the buck the mm210 is a fine fine machine, I got the mm210 w/ spoolgun for less than the base machine cost of the mm251.

Fuel for Thought,

**Canuck** · 05-22-2004, 12:51 AM

I think the mm210 is a great machine but I just like to get the bigger machine when I can afford it. I don't plan on buying another mig in at least 10 months to a year but if a good deal came I would jump at it. I am not sure what thickness I would be doing but there is a good chance that in the next few years I could be running my own shop and would like to get the machines and other equipment now before I have as many bills to pay

Thanks for the advice

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