Why did I even bother with a TIG welder? This morning I have got the MIG welder that was given to me by Wyn (aka lsdweb) working again and had a go at
welding on some spare tube.
MY GOODNESS HOW EASY IT WAS!!!
I've lost count of the number of chassis tubes I've had to cut out and re-make because my TIG welder blew a hole in them.
I'll definitely be using the MIG for the rest of the chassis. However I must say that I have noticed that the TIG welds are a quite a bit
prettier.
Lesson learned.
I'm glad it works!
You blew the hole, not the TIG welder D:
Yes Mig is fast and efficient but TIG is so much cleaner, no little holes in clothes, except when you grind away.
If you are blowing holes with TIG it sounds like you are not moving the torch back and adding rod to the pool, also the rod cools the pool so maybe
just going a little to slowly or to much heat in one spot.
TIG also like to be horizontal so you have to keep moving the chassis around, MIG is all directions even from underneath until you get a fizzler in
you ear!!!
You need to persevere with TIG until you hit eureka, then it all starts falling into place..
quote:
Originally posted by mark chandler
TIG also like to be horizontal so you have to keep moving the chassis around, MIG is all directions even from underneath until you get a fizzler in you ear!!!
quote:
Originally posted by mark chandler
TIG also like to be horizontal so you have to keep moving the chassis around, MIG is all directions even from underneath until you get a fizzler in you ear!!!
quote:
Originally posted by lsdweb
I'm glad it works!
I learnt TIG for my chassis, because I had access to the equipment. I've never blown a hole in steel with it. It takes around 1 second just to pool up nicely. What settings were you using? TIG is pretty awkward with its setting. Took me a while before I found the right mix of Argon, Amps and tip distance from ceramic.
TIG is like oxy-acetelene, need lots of practice, but once you GET IT, it's the best for light work such as Locost parts.
quote:
Originally posted by deezee
I learnt TIG for my chassis, because I had access to the equipment. I've never blown a hole in steel with it. It takes around 1 second just to pool up nicely. What settings were you using? TIG is pretty awkward with its setting. Took me a while before I found the right mix of Argon, Amps and tip distance from ceramic.
Now as a total ignoramus re: TIG welding (or any other type for that matter!) 5L/min????
Dear god that's never right is it?
Steve
5L/min is about half what you need. Whack the gas flow up to at least 8-10, and learn to accept that TIG costs you a fortune in gas
I have used both types of welders and I have to say that Mig is p**s easy to use compared to Tig but there is no doubting that tig is so much better looking. As said before its much better for lighter work. Its also quite a bit slower, and there is less chance of getting that fizzler.
i have used the mig on my chassis for most of the fiddley bits and the tig for the other bits.
i tig on around 4-5lpm with a wp17 type torch. a good quality well designed tig torch is the trick to lo lpm 
also think back and remember who told you that you need to run at 10lpm? (i bet it was your gas company or some nice person passing on the
message)
trick is to keep lowering the gas flow until you get poor welds then up the gas a little.
Power sounds about right try a smaller shroud for the tight spots, and change the tungsten for a worn out one and a smaller tungsten cover at the back
of the torch, are you welding right handed? and in what direction forward or back??
Shug
another thing I have found, if talking the finer points of TIG use, is that a gas lens body works much better than a std collet body, and I'm pretty sure none of the chinese tig's come with gas lens bodies in their torches?