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  #1  
Old 03-19-2014, 01:04 AM
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Miller Maxstar 300 LX Help please

Hi All,

I picked up a Miller Maxstar 300lx at auction with no leads etc (bare unit, not even a plug).

I have fitted a plug and it appears to be working. The face lights up and all switches work.

What I would like to know is;

Is this welder any good?
Am I wise to throw $500 odd towards leads etc.?

If so;

What leads / torch / control (foot pedal / on torch) would you recommend for welding a 0.120 wall 4130 trophy truck?

Is water cooling necessary in this application?.

Bearing in mind that I have a 200AMP AC/DC Tig that I have used and am comfortable with ($1500 new china special),

Will it be worth learning this machine or am I better buying cheap leads and on selling it (I got it for $400), and continuing on with my china special.
http://www.unimig.com.au/catalogue_p...asp?product=54

Cheers,

Justin
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Last edited by bru21; 03-19-2014 at 02:27 AM.
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  #2  
Old 03-19-2014, 03:54 AM
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wyoming9 wyoming9 is offline
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First Blue beats China any day.

Have you downloaded the users manual from Miller and read through that???

Which should always be your first choice it is mine.

What you have is pretty much a XMT-304 with a few more goodies to help you Tig The only other difference is the lack of the CV side for running Wire but you could use a Volt sense Feeder

Beg or borrow a set of leads try SMAW see if you have output and control in the whole range.

Knowing it is a DC only machine maybe just use it for SMAW.

Weather to spend the money to set it up for GTAW is your call

Liquid cooled allows you to use a smaller torch if your welding in tight quarters.

I must say you are much braver then me or have lots more money to buy a welder at a auction.

In any case good luck.
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Last edited by wyoming9; 03-19-2014 at 03:14 PM.
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  #3  
Old 03-19-2014, 09:39 PM
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Quote:
Originally Posted by wyoming9 View Post
I must say you are much braver then me or have lots more money to buy a welder at a auction.

In any case good luck.
Especially when there is no plug!!!! :-O

That is usually a dead giveaway that the machine has shot craps. Inverter machines are so hairy when you can't run them through their paces.

Got cajones fo sho!
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Old 03-20-2014, 04:36 PM
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Ha Ha,

I have always done well at auctions, so even if I fail on one item, I am well ahead overall.
The auction this came from had 5 similar machines, all minus plugs and all the plugs / leads etc were on another pallet.

They came from a pipeline project that was finished.
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Old 03-21-2014, 04:06 AM
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Ok in your case you do have more money then me!!!

Inverter type welders no way would I buy without putting it through a good work out.

Well I hope this works out for you.
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Old 08-21-2014, 06:29 PM
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I would like to set this up as a pulse mig for welding steel. Do you have an idea on what part numbers I would need?

My other option is to grey import a
http://www.millerwelds.com/products/...p?model=M00151

We have 240v single (20A) and 415V (80A at my home shop) Three phase here. Would the 350P run on this?

Best regards,

Justin
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  #7  
Old 08-22-2014, 03:37 AM
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I know the models for use here in the USA you might have problems .


Due to the input voltage being just a little low. I don`t really see any of the machines made for export.

There might be models made for just the voltage you have.

Interesting Question I am curious
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Old 08-22-2014, 08:27 AM
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Thanks mate.

My Unit has the 110v sockets on the back of the machine with the US plug. I assume a wire feeder could use those?

On another note,
The Australia reseller is WIA http://www.welding.com.au/equipment
They have the xmt 350MPa which would be my first choice - but would probably be cost prohibitive here?
What is a good honest price for this unit in the states, with a wire feed unit? I might import one LCL. Prices online seem to vary widely.
From what I can see they will handle the higher voltage here.
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  #9  
Old 08-22-2014, 06:14 PM
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The Miller XMT 350 Mpa retails List price $5,851.00

Depending just how you shop and who you know $4,700.00 perhaps even better.

That is in American Dollars.

The feeder gets the control and wire motor voltage through the 14 pin plug.

The outlets could be used for a cooler other than that is kinda dumb when your in the shop
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Old 08-22-2014, 06:56 PM
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Thanks for that,

What wire feeder would you recommend with this unit?

Best regards.

Justin
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  #11  
Old 08-23-2014, 09:12 AM
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wyoming9 wyoming9 is offline
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Just what is your end game here??

I know you said pulse welding of steel why ??

Are you not able to pass what ever code you are trying for in short circuit or spray arc with the proper shielding gas ??

I suggest if you have not done it yet down load and read the operators manual at millerwelds.com

They have the 70 series MPa plus feeders made for the MPa Invisions and XMT MPa welders These work together in a synergistic way.

You can use any other Miller feeder but you need to set the pulse up manually if your the only one using the welder it is not bad if there a few of you.

It can be a real pain as we all weld different enough to be a pain.

I will answer your questions as I can.

Feel free to Pm me if you want.
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Old 08-23-2014, 07:44 PM
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Thank you for your help.

As for my end game;

I am of the personality type that looks for constant improvement in what I do. I have no real reason for pulse as such - I just see it as another opportunity to better what I do, presenting itself.

We are about to release our line of expedition vehicles, and I would love to make sure our welding is better than anything else available. It is not a necessity as such - obviously straight transformer welding will produce acceptable results.

I love the pulse capability of my tig vs my old transformer unit, so I would assume the benefit with mig would be similar. Especially when welding aluminum fuel tanks etc.

Best regards,

Justin
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  #13  
Old 08-24-2014, 05:45 AM
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If your going to run aluminum pulsed mig you need a different feeder set up and it starts to get real expensive fast

Like about another $5,000.00 plus depending on if you go with the XR-Control and Aluma-Pro gun
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Old 08-24-2014, 01:41 PM
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Especially when welding aluminum fuel tanks etc.
Justin
MIG aluminum tanks??

E
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Old 08-24-2014, 09:27 PM
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Our sub tanks carry diesel and are heavy duty 3-4mm thick.
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Old 08-25-2014, 12:45 AM
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Thanks for the clarification
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  #17  
Old 09-20-2015, 12:36 AM
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John2500HD John2500HD is offline
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I own a Miller 350 with an XR-A alumipro push pull gun and a 30A Spoolmatic spool gun. I am still learning the machine. So many options and choices. I am used to my HH 180 mig welder that I learned to weld on, basic as it gets.
I have never pulsed steel, only aluminum. And it does seem to help with appearance but I still get black soot when welding aluminum. (I think it's from not enough argon)
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Old 09-20-2015, 12:57 AM
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The black soot can come from not enough gas coverage .

It can also come from drawing air into the inert gas someplace .

bad cylinder of gas

Really poor prep work

I take it you have the Miller 350P not to be confused with the Miller xmt-350
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Old 09-20-2015, 06:56 AM
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John2500HD John2500HD is offline
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Thank you for your input. I am somewhat new to welding aluminum. My HH welder is a steel only machine.
Next time I will check for leaks, prep better, and probably turn the gas up.
I am not familiar with the model of welder you mentioned. I love the nice sea of blue equipment in your shop.
Sorry to totally get this thread off topic.
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  #20  
Old 09-21-2015, 03:42 AM
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The thread is a year old it doesn`t really matter.
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