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I am not a welder.... but from what I have seen,

MIG has a reel of wire that is fed into a shroud of inert gas, current goes through the wire to create the spark, gas keeps out impurities.

TIG has gas as well but a fixed electrode that creates the heat, you feed in the filler metal by hand.
 

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As kev says, but the other big differance is the price, a TIG welder of any use, is around the £800 mark where as a MIG you can pick up quite cheaply, you also need a decent mask, preferable a self darkening one, but again these arn't cheap, stick welding is cheap enough but not much use for panel work, oxy acetalene welders can still be obtained from car magazines, but the gas is expensive from places like Halfords etc
I suppose it really depends on what you are thinking of fabricating as to what welder you will be best going for.
 

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MiG is a semi automatic process in that once you have set it up,(speed of wire feed and current) you press the button. TiG requires two hands- one to control electrode and the other to control feed of filler metal (similiar concept to oxy-acetlyene or brazing).

Depends what you want to weld. For mild steel 2mm upwards and the weld doesn't have to be aesthically pleasing go for MiG. If you're thinking of welding stainless, aluminium and thinner sheet or you wanting to go for Tig. Also are you welding in a garage or outdoors? If outdoors you may want to consider MMA, as drafts will blow away the 'gas shroud' of TIG & MIG, leaving you with a weld bead full of holes (porosity caused by oxygen inclusion in the molten metal)

if you've got no welding experience Mig is easier to learn with.

* Some of this information could be total bollocks as I've not welded for 20 years since I gave up, after finishing my apprenticeship.
 

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All said above is spot on . Welding is a dirty stinking job IMO , I've a mig in the garage that's not struck a blow in 5/6 years and I can't see me bothering again I got well fuck off lying below old motors patching them up for mots etc , not nice work .
 

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My old man used to be a welder, lots of specialist titaniums and alloys. I always remember needing to go to the hospital for welding flash and now all those years of inhaling fumes are taking their toll. Think judging by his standards, to get good at it, you need to do lots of it, to do lots of it you need to put yourself in 'harms way' (so to speak). but that said he is an amazing welder and it's a very useful ability to make such a neat and clean weld...
 

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I would go for the MIG DG if youve never used one before , dont buy the cheapest one you find though , ive got a MUREX Mig welder that ive had for about 20yrs and still going strong .Machine Mart seem to have a good range but dont know what the qualitys like . Not sure what the "No Gas" welders are like as ive never used one ..
Oh and a Ark activated mask makes things much when learning
 

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Go for a MiG welder, they're the best for beginners. I bought a cheap used Clarke MiG (100amp?) years ago, used for making parts, repairs etc. TiG gives a neater weld if you're experienced though. Get an auto-darkening helmet, they're not as expensive as they used to be and make life easy.

A decent second hand unit with a good sized gas bottle is the way to go, built the pannier frames for Ela's DRZ earlier this year using my cheap MiG. Once you've mastered matching the wire feed and amperage to the material thickness, you'll be okay.

I also did a TiG course years ago at the local college in evening classes, check out local colleges?
 

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Hi mate, i am a welder by trade, doing the job every day.
If you have never welded before, it is not the easiest thing to do.
Wouldnt bother with a tig welding plant, if you have never done any kind of welding before.
Stick with mig welder, if you want a decent weld, plus dont buy a cheap mig welder that runs gasless wire.
If you need any more advice please feel free to give me a ring on 07513003436.
 

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Dont forget to invest in a fire extinguisher too ;)
 

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Spent years TIG welding stainless steel. Basic rule of thumb is that pretty much anybody can MIG weld, but it takes skill and finesse to TIG weld.
 

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Hi DG,

Don't bother with a Tig set as Tig welding is best left to experienced welders, as most people have said on here start with a half decent Mig set. If you're only going to be running it of a single phase 13amp plug then the maximum rated set you'll be able to buy will be 150 to 180amps.

This website is worth having a look at as it gives tips of buying Mig sets and also on the basics of how to Mig weld.

MIG Welder Buyers Guide

Have fun and watch out for Arc Eye!:eek:
 

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If you go for MIG you then have various choices of filler wire, but for each wire usually requires a different gas. You then have wire size which will determine how thin/thick the metal you are to weld.
Gases also determine penetration. E.g CO2 (pub gas) gives very good penetration but poor appearance, also produces more spatter. Argoshield gives not as good penetration but a way better appearance.
Argoshield then has variants; light, universal and heavy. Again these determine penetration.

You also have preparation of the metal. MIG dosnt like welding over paint, rust, grease, galv, plastic etc so really clean the area to be welded.
For anything over 3mm should have an edge prep, this is also to help with penetration.
 

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mig is pretty easy to pick up , tig is inredibly hard to do even if you have welded before . stick to mig the ones with the bottles are best city and guilds qualified welder
 

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if you are intrested in learning to weld the colleges will be enroling soon , will cost a bit but once you learn its a skill worth having ie make your own trailer for your bike instead of bying one
 
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