Ask your WELDING questions here.

Discussion in 'The Garage' started by KTM640Dakar, Mar 5, 2007.

  1. NitroAcres

    NitroAcres MotoBiggots Suck

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    David R, I use the same method for all broken studs..stuck bolts, I had one on a Merc outboard that was being stupid, kept moving alittle or so I thought, then would break off, finally I got an idea to use my SnapOn 3/8 18v impact....just hit the trigger alittle to let it hammer...lo and behold..the socket started spinning and out it came...found it works very well on the last five or six I have tried it on.:)

    There is a shelf full of those nuts welded to all sorts of broken threaded object in my shop, one of them is actually what is left of a stud, tap and ez out all in one...:)
  2. ER70S-2

    ER70S-2 Long timer

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    :rofl

    David:
    Thanks for the answers. I don't do much shop time and having these ideas in my head helps solve problems when they show up. :nod
    Mr. -2 :beer
  3. Rapid Dog

    Rapid Dog bikes, booze, broads...

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    ...having not read this entire thread...:shog...what's the consensus on a small TIG set up for a beginner? Not a beginner at welding, but would like to learn TIG and do some bike frame mods and such.
  4. David R

    David R I been called a Nut Job..

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    Go for it!
  5. ER70S-2

    ER70S-2 Long timer

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    Tools aren't an expense, they're an investment. If you're a 'garage guy' and under 50, buy a good one; you'll giggle every time you use it. :nod How do I know? I bought mine in 1993 (before all the new cool shit came out), and I'm still giggling. Me pointing to my TIG in the corner-----> :razor

    The DR650 has a phillips head screw for a floatbowl drain. But they're stupid tight and easy to strip. I'm going to buy a few and weld allen heads on them. Fixt. The cool thing about a good TIG is how small you can weld. :wink:

    The Miller Dynasty 200 is expensive, and very cool. Prorating costs over a lifetime, not too bad. :evil You can also plug it into any outlet and it sets itself for the voltage.

    A good unit will also be ready when you want to learn aluminum. :D

    If you go too cheap, you'll hate it and it will sit in the corner collecting dust.
  6. ADV8

    ADV8 Taumarunui..Darwin..

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    The Lincoln 175 inverter is a good starter machine and should be reasonable cost wise.
    The V200T is still the machine for DC but no longer a current model.
  7. ER70S-2

    ER70S-2 Long timer

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    I missed this: if you think you'll ever want to weld alum, the welder must have AC capabilities and that's when the cost starts going up.
  8. ADV8

    ADV8 Taumarunui..Darwin..

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    I think the Invertec V205-T AC/DC might be outside the scope but would probably be the only other machine I would trade my V200T on.

    Typically Lincoln stopped making the V200T.
    Both 240 and 400 volt option,150 amp 100% duty cycle,it will weld thin wall purged tube in the morning and after lunch be putting a T.I.G root in followed by 4 mm electrodes without breaking a sweat.
    Legend machine.
  9. sailah

    sailah Lampin' it

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    I paid $900 for this (Lincoln Precision TIG 185) and use it a lot for a hobbyist. It has pulse, AC etc. Pretty much does what I want, which is everything. I would love to play with a Dynasty but honestly until you know why you should be fiddling with all the settings you don't need something that complex.

    TIG machines you can sell in a second if you get a good buy so don't worry about wasting money. I started with a chinese TIG clone, worked great for learning and I have to say welded excellent

    [​IMG]
  10. KTM640Dakar

    KTM640Dakar Motorsick

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    Wow. This thread has been busy.

    Nice repair on the aluminum casting. That guy did a fine job for you. It is nice that copper and aluminum dont like to join together. He made that work out quite nice.

    Yes 316LSi or 308LSi or 309 LSi are all stainless mig wires that have low carbon and additional silicon to help the puddle flow. You always want to keep the carbon content low in stainless steel filler metals so that the carbon and chrome dont combine to make chrome carbides which leaves an area around the chrome carbide with less chrome that in turn will reduce the corrosion resistance of that area.

    As far as TIG welders. The Precision TIG 175 became the Precision 185 and then morphed into the now Precision TIG 225. The cost of the 225 was a bit expensive so Lincoln reintroduced the 175 again. All are fine AC/DC TIG welders that use a 150 Amp aircooled torch. The torch is always the weak link in that it can weld for 6 out of 10 minutes at 150 Amps before it gets too hot and you need to let is rest for 4 minutes.

    We still make the Invertec V205T as a DC only TIG welder and also the nicer Invertec V205T AC/DC which of course has AC for aluminum TIG welding. However since you are located in Austrialia they may have indeed stopped making it for the Austrialian market but it is still available in the US. I use the V205T AC/DC all the time and love it but the Predision TIG line is also very popular and they are transformer/rectifier machines where the V205 is an inverter.
  11. ADV8

    ADV8 Taumarunui..Darwin..

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    Is that newer model single phase only ?
    As you would know a simple plug change (Or a debatable but quicker twin plug adapter) and flick of the switch on the older model V200T and you were running 400 volts.
    We had the newer inverter 175 single phase and 205? three phase machines at the last LNG job.
    The 175 DC machines were certainly robust given the work environment and sometimes rough handling.

    if it ain't broke......

    [​IMG]
  12. wee-twin

    wee-twin Been here awhile

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    Using a miller 130. What pressure do I set the gauge on my argon 75/25? Thanks.
  13. David R

    David R I been called a Nut Job..

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    I went to the Local Welding Supply place to buy a V205 AC/DC. They sent me out with an Theremal Arc Arcmaster 185 AC/DC. I think I saved about a thousand bucks. That was 6 years ago. Yesterday My son ran it most of the day at full power welding 3/4" couplings on 1/2" plates with the aircraft positioner. No overheating, no problems since I bought the machine. The only thing I did is add a water cooled torch.

    David
  14. David R

    David R I been called a Nut Job..

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    15
  15. wee-twin

    wee-twin Been here awhile

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    Thank you David R.

    Bill
  16. KTM640Dakar

    KTM640Dakar Motorsick

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    Most TIG welders are single phase. Some of the newer inverter TIG welders can run on multiple input voltages. The three phase machines are a new thing and I have only one the uses three phase input power.

    That FJ45 Landcrusier in your photo is pretty cool. I have an FJ40. It is a great 4x4.

    Flow rate for a MIG gas regulator is OK at 15 CFH if your inside and there is no cross breeze. If your outside you may have to turn it up to 35 or 40CFH. If you see porosity (holes) then you know your gas is not covering the molten puddle.
  17. motoracer51

    motoracer51 Been here awhile

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    Is it that low since he's using a smaller machine? I've been playing with my new 211 and the manual said 25-35.
  18. sailah

    sailah Lampin' it

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    Can we discuss cup sizes:lol3

    I have 2 air cooled TIG torches, a WP9 & 26 I think.

    I mainly use the WP9 with a gas lens, never had any idea what cup size I should run or why. I just use what they give me at the store. Mine necks down, but I see some guys are running these huge wide jobs.

    I typically am welding CS less than 1/8" (tubing mostly) and alum under 0.090" 5052, 6061 etc.

    Are there guidelines for cup sizes for different metals or shapes (flat vs tubing)?

    I am running pure argon maybe 15 cfh, inside no breeze for both AL and CS
    Thanks
  19. wee-twin

    wee-twin Been here awhile

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    Flow rate for a MIG gas regulator is OK at 15 CFH if your inside and there is no cross breeze. If your outside you may have to turn it up to 35 or 40CFH. If you see porosity (holes) then you know your gas is not covering the molten puddle.[/QUOTE]

    Good information giving the base pressures and how to tell if I am using enough. So I will start with 15 and increase pressure if I have porosity? I picked this Miller 130 up used and played with flux core till I decided to spring for the argon tank. The more I weld, the more projects/repairs I come up with. Should have bought a mig years ago...Thanks
  20. David R

    David R I been called a Nut Job..

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    Do your self a favor. Weld inside, have Some one turn the gas down slowly till you get porosity. I can run my SP100 as low as 7 cfh.

    Tig cup size depends on amps, what you are welding and type of joint. I use small as I can.
    More amps bigger cup.
    Stainless biggest cup.
    Fillet, smaller cup.