Gasless Mig Welder

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JohnM70

JohnM70

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Are they any good?

I'm new to welding, but have found a Sealey MightyMig 100amp for not much money.
 
Thor1950 said:
Yes and no...... Yes for heavy plate steel for flat work. No for light sheet work like on auto bodys and chassis work
Click to expand...

Now what you on about? :confused: amps are adjustable. Be fine for body work so long as it has decent settings but will be flat out on thicker plate.

Probably be ok up to 2.5mm for chassis work just about but most advise 150 amp for anything heavier
 
Cheers BB, only going to be used on the Fender and it's only £50 ono

It's this one:

MIGHTYMIG100.png
 
John, I'm not keen on gas less, I find it much harder to make a tidy job and wouldn't think they'd be the best to learn with but they do mean it's more possible to weld outside in a breeze. I'm no welder though.

Unlike you Thor and if I suspect you of giving out false info maliciously on technical threads you'll be banned without any further warning. Is that clear?
 
Not ideal because it only has a high or low setting so you'll rely mostly on wire feed setting for adjustment but it'll certainly do the job. It's nice to have fully adjustable power but not many seem to have that these days at the cheaper end of the market
 
Thor1950 said:
Yes and no...... Yes for heavy plate steel for flat work. No for light sheet work like on auto bodys and chassis work
Click to expand...

Make you mind up - the chassis IS heavy steel, about as heavy as a 100 amp gasless will handle anyway + there's nothing else much thicker on the motor

blue beasty said:
Not ideal because it only has a high or low setting so you'll rely mostly on wire feed setting for adjustment but it'll certainly do the job. It's nice to have fully adjustable power but not many seem to have that these days at the cheaper end of the market
Click to expand...

I've found this takes a lot of trial and error to get right on some of these the max setting will just blow through. for bodywork use min and as said play with the wire feed til you are comfortable on some scrap first.
 
OK, so is it worth hanging on and looking for a gas one with more control? I do have a CO2 cylinder I sort of came across by way of a closed pub!
 
JohnM70 said:
OK, so is it worth hanging on and looking for a gas one with more control? I do have a CO2 cylinder I sort of came across by way of a closed pub!
Click to expand...
I had a cheap MIG that was gas or gasless, I'm no expert but I never did manage a decent weld with it, then I went to night school and did forge work where they had a small BOC Mig, bingo suddenly I could weld:)
I know the saying a bad workman blames his tools but the cheapo MIG really was useless, even the pro had trouble with it.
I recently did the body work on wifes R11 with a standard arc welder, good enough to pass the MOT with a compliment about the repairs:D
 
I had a gasless welder as that's all i could afford at the time and it was ok on bright and shiney stuff.
Take you time and they are ok.
Now have a gas one with an Argon bottle on it and it's like chalk and cheese compared to the gasless.
Much more forgiving on pitted metal and much neater welds.
 
blue beasty said:
John, I'm not keen on gas less, I find it much harder to make a tidy job and wouldn't think they'd be the best to learn with but they do mean it's more possible to weld outside in a breeze. I'm no welder though.

Unlike you Thor and if I suspect you of giving out false info maliciously on technical threads you'll be banned without any further warning. Is that clear?
Click to expand...

I got 35 years of welding experience 20 years as a high pressure welder on 1200 psi steam plants Which required 28 weeks of school 8 hrs a day 5 days a week and all welds were X-rayed,and lots of hours with gas mig on aluminum super structures on combant ships out side. with a few years of ship yard work, and then some heavy industrial repair and construction (iron work). So hardly false info, yes you could weld thin sheet metal (with gasless, flux core), but it turns out like ****. gas gives a much better weld with less heat distortion, and you can use mig with gas out side, you just need to put up wind curtains to block the wind. This is done in thousand of places every day in the world, weld with gas mig outside.

This is why I said a yes/no answer. So hardly maliciously false info.There are only a couple of other power plant welders on here. Most are beginners, and good for them for trying to do what they need to do for repairs.
 
Thor1950 said:
I got 35 years of welding experience 20 years as a high pressure welder on 1200 psi steam plants Which required 28 weeks of school 8 hrs a day 5 days a week and all welds were X-rayed,and lots of hours with gas mig on aluminum super structures on combant ships out side. with a few years of ship yard work, and then some heavy industrial repair and construction (iron work). So hardly false info, yes you could weld thin sheet metal (with gasless, flux core), but it turns out like ****. gas gives a much better weld with less heat distortion, and you can use mig with gas out side, you just need to put up wind curtains to block the wind. This is done in thousand of places every day in the world, weld with gas mig outside.

This is why I said a yes/no answer. So hardly maliciously false info.There are only a couple of other power plant welders on here. Most are beginners, and good for them for trying to do what they need to do for repairs.
Click to expand...

I know all this, you keep telling us.

Its still a case of you giving ****e info on a tech thread.

That welder will suit a hobbiest, weld body work and just about chassis and what you implied was the exact opposite and as an experienced welder you know that.

Argue and try and deny it all you want but I'm not stupid and you'll very soon find yourself arguing alone :mad:
 
Thor1950 said:
DazDisco said:
Make you mind up - the chassis IS heavy steel, about as heavy as a 100 amp gasless will handle anyway + there's nothing else much thicker on the motor
Click to expand...

Chassis is not heavy metal, chassis is what 3mm less than a 1/4 inch then add the rust factor then it is thinner yet.
Click to expand...

So you're saying a 100 amp gasless is suitable for 1/4" plate???

Shut up now :mad::mad:
 
Thor1950 said:
Chassis is not heavy metal, chassis is what 3mm less than a 1/4 inch then add the rust factor then it is thinner yet.
Click to expand...

sorted that quote for you mate

I know chassis thickness as I have one. Point is op was about a 100 amp amateur hobby welder gasless. these are suitable for up to max 4.5-5mm, I am under this belief as I have one and have read the manufacturer's instructions.
If you are saying they are only any good over 1/4" which is 6.35mm. why then are they sold in the uk to hobbyists if they are not fit for their intended purpose. How many hobbyists play around with 6mm plate?:confused:
 
once youve used a decent welder you will know those little welders are crap for thin stuff ,they may not turn up very high but they dont turn down enough either, 2.5 mm chassis plates is about as small as id want to weld ,though anything is possible if your desperate enough
 
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