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  #1  
Old 01-21-2018, 01:48 AM
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Lightbulb What is the most inexpencive way to run a spool gun on Bobcat 250

Ok.... So I'm looking to run a spool gun off this Miller bobcat 250
And don't want to spend a lot of money, what is the most in expensive way to do this what is required.

I am unsure of where to start ... I thought about a suitcase welder as they pop up on CL here every now an then for dirt cheap

can i do aluminum Via Spool gun with out the high frequency cost

anyway just wondering if there is a economy way to do this for a cheap skate like mwah...
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Old 01-21-2018, 08:46 AM
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I think you got a couple of questions in there.
IIRC Aluminum MIG runs on D.C. and no hi-freq.

My neighbor ran aluminum MIG for years with an older Airco
suitcase with a 4' lead, he would hang it from the jib crane
over the work.

He did have some feeding problems though, so eventually went whole-hog
and bought a wire feeder with push/pull gun.
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Old 01-21-2018, 09:09 AM
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I don't know how to make the spool gun play with the bobcat, but I can tell you that you don't need hi-freq to mig aluminum. Aluminum MIG is done on DC, just like steel, so if your bobcat is AC only that will be a problem (I don't have much experience with engine drives).

You also will have to look at what spoolguns are available, and what you want to do with them. I have an entry level lincoln spoolgun and it says right on it that it is only for use with soft wire(aluminum). If you are wanted to mig weld steel, stainless, or anything besides aluminum you would want to get a wire feeder, or a spoolgun rated for hard wire.

Sometimes your best option is to use the engine drive as a generator to power a small mig welder, but it depends on what your machine specs are and what your goal is to do with it.
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Old 01-21-2018, 09:39 AM
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Depends a little bit on the spool gun. I have run both the 3035 and I now have the 30a. Also had a spoolmatic 1. If you are going to buy one just spend the money for the 30a

Here is the Miller spoolgun connection chart.

https://www.millerwelds.com/support/...n-hookup-chart
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Old 01-21-2018, 11:35 AM
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Quote:
Originally Posted by Walker View Post
Depends a little bit on the spool gun. I have run both the 3035 and I now have the 30a. Also had a spoolmatic 1. If you are going to buy one just spend the money for the 30a

Here is the Miller spoolgun connection chart.

https://www.millerwelds.com/support/...n-hookup-chart
Walker nailed it. You will need an adapter either way, I also agree with his
comments on the Spoolmatic 30A, just eat it and buy one. BTW, they really
hold their value, so if you decide to later you can sell it for almost the price of
a new one.

High freq. is used in AC TIG welding not MIG.

None of it will be cheap.
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Old 01-21-2018, 12:23 PM
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Saw a used 30A in working condition on Ebay for $465. I would get one but I would only use it once a year.
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Old 01-22-2018, 12:17 AM
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Yeah sorry! I think i confused everyone on the aluminum spool gun question
as my brain was in lack of sleep distress at the moment.

what i meant was what spool gun should i use for the aluminum and is it feasible with out having to go with a HF TIG set up

Miller WC-24 Weld Control
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I found this if this is what it is.... the guy is selling it as an adapter for spool gun and idle control for miller bobcat 225 and 250

on my old miller for TIG i used a scratch start with a gas valve but was just for carbon steel didn't care to much for it either.

If i do run a MIG off it, it will be with a feeder
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Old 01-22-2018, 12:39 AM
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Default spool gun 200Amp

Will this spool gun work ?
I can get the SPG with 10 0r 16 ft. lead or this one with the DIY as a kit.

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  #9  
Old 01-22-2018, 07:42 AM
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Quote:
Originally Posted by MetalWolf View Post
Yeah sorry! I think i confused everyone on the aluminum spool gun question
as my brain was in lack of sleep distress at the moment.

what i meant was what spool gun should i use for the aluminum and is it feasible with out having to go with a HF TIG set up

Miller WC-24 Weld Control
Attachment 143145

I found this if this is what it is.... the guy is selling it as an adapter for spool gun and idle control for miller bobcat 225 and 250

on my old miller for TIG i used a scratch start with a gas valve but was just for carbon steel didn't care to much for it either.

If i do run a MIG off it, it will be with a feeder
Quote:
Originally Posted by MetalWolf View Post
Will this spool gun work ?
I can get the SPG with 10 0r 16 ft. lead or this one with the DIY as a kit.

Attachment 143146Attachment 143147
WHAT THE FUCK??? YOU ARE NOT MAKING ANY FUCKING SENSE.

MIG is a constant voltage process, a spoolgun is a MIG process.
Stop fucking talking about TIG or HF they have fucking nothing
to do with it.


Look at what Walker posted, you need that equipment to run a
spoolgun, This aint fucking granimals you cant mix and match
any cheap shit and expect it to work.
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  #10  
Old 01-22-2018, 07:46 AM
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Quote:
Originally Posted by Walker View Post
Depends a little bit on the spool gun. I have run both the 3035 and I now have the 30a. Also had a spoolmatic 1. If you are going to buy one just spend the money for the 30a

Here is the Miller spoolgun connection chart.

https://www.millerwelds.com/support/...n-hookup-chart
You have to get the equipment listed or it will not work, there is no fucking
secret decoder ring. You need an adapter, as the Bobcat is a CC power source
and a spoolgun runs on CV so the adapter works similar to a voltage sensing
feeder and adjusts your wire feed speed.

BTW, you still will not get as nice as arc or weld as you will off of a true CV
power source, but it will work.
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