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  #61  
Old 06-11-2012, 04:22 PM
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GregWeld GregWeld is offline
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Quote:
Originally Posted by Sieg View Post
Would this work for a budget tungsten grinder after a little McGyver modification?

http://www.harborfreight.com/120-vol...ner-96687.html


No --- just buy a cheap ass bench grinder and get a couple fine wheels and just dedicate them to tungsten only.

No need to make stuff complicated - it ain't rocket science.
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  #62  
Old 06-11-2012, 11:12 PM
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duplicate due to glitch.
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  #63  
Old 06-11-2012, 11:13 PM
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Quote:
Originally Posted by GregWeld View Post
No --- just buy a cheap ass bench grinder and get a couple fine wheels and just dedicate them to tungsten only.

No need to make stuff complicated - it ain't rocket science.
Understood Sir! The cheapest grinder is $38 plus a fine wheel.
That sharpener has a motor and diamond (possibly zirconium) wheel and it wouldn't take much to make a verticle mount and adjustable guide for the tungsten and throw the base and other crap away. ASSUMING the motor isn't a wobbler it should get the job done and not take up much space.

Fire suit on Sir.
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  #64  
Old 07-27-2012, 04:07 PM
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Quote:
Originally Posted by 70 chevelle View Post
Htp also sells one . Slightly cheaper
http://www.usaweld.com/Adjustable-Tu...r-p/ts-adj.htm
Bought one of these and have been super happy with it! And great for the price!!


****Update and suggestion for anyone fighting inconsistent TIG results****

As a follow up a month or two after starting to use the adjustable grinder its still working well but I was still fighting issues with inconsistant welds. I've moved my TIG welder away from the workshop bench where I do most of the cutting/grinding/ welding and I've started wiping down EVERYTHING I TIG with acetone and haven't had any further issues. I used to store my TIG right next to the bench and even though it was under a cover it was getting hit with grinding dust, oil overspray, and basically anything else that was going on at that bench. Rods were being stored on the back of the welder cart so I'm sure they were getting the same exposure.

Seems common sense now...

Last edited by Revved; 09-25-2012 at 10:58 AM.
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  #65  
Old 11-09-2012, 10:56 AM
preston preston is offline
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A couple things I've had success with lately -

Finally got around to buying a .040 tungsten. I am mostly welding 20 awg sheet metal and I was very surprised how big of a difference it made. So if you've been lazy like me because its hard to find at your local shop make the effort it was a 15% improvement. I'm still using .040 rod but I may have to try some MIG wire next.

I have also had succes with something else new. Guys on allmetlashaping were debating (for the 20th time) gas vs MIG vs TIG and HAZ and distortion etc. One guy piped in and said he didn't start of stop at all, just moved fast enough that distortion wasn't a problem and showed a door panel he had welded front to back nonstop. Now you know how hard a big open panel like that is to keep from shrinking away. Well I had heard people talk about fusion welding before but mostly thought it worked for the occasional tack welding god or gas welding or whatever, but after seeing his technique I started trying it more and I was like "Holy cow !" virtually no bead and pretty small HAZ and I'm still slow. Now you have to have perfect fitup, any gap at all and the rod has to come in, but I can now pull a 3-4" bead with no filler rod at all. And, in fact, my fusion weld is far superior to my "rod" welding as that still comes out lumpy and inconsistent and most importantly, slow - I am moving almost twice as fast when fusion welding so less heat, less distortion.

It probably only works on steel, haven't tried it on stainless, and I don't think you can strictly fusion weld on aluminum although I have carried the pool pretty damn far without rod before. Since I usually weld both sides of aluminum it works well for the 2nd side though.

Anyway, what works for me is come in hot (my lincon 225 machine is set to about 50 amps). So I come in full pedal and then even before the "spot" turns red I am moving forward (usually pushing the torch) and just keeping that hot red spot from melting through. If I come up to a tiny gap i might just kiss some rod in there. Also, I am moving between tacks about 2" apart so just about the time I am losing it I usually hit a tack and get some fresh pool.

I am far from an accomplished tig welder so if I can do it you can too. The bead comes out so nice and tiny you could almost planish it out (another technique I never believed in before as I always have to grind the crap out of my welds)

Also I was trying ceriated and it was crap, I hadn't tigged in a while so thought I just sucked, but switched back to thoriated and big improvement. So no matter what tungsten is recommended, keep experimenting you may hav ebetter luck with one thing or another.
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  #66  
Old 11-09-2012, 05:30 PM
WSSix WSSix is offline
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I've watched friends weld up stainless exhaust parts without using any rod. Just like you said, Preston, make sure the fit is good and keep the tip moving. The welds they laid down came out very nice with small beads.
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  #67  
Old 04-03-2013, 10:50 AM
ssinister ssinister is offline
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i tig welded these with a miller 250, on the ss tank and roll bar mount I used 3/32 red tungsten sharpened on a used 120 grit belt sander spinning in a drill. I always sharpen parallel to the centerline, but have only used a dedicated tungsten sharpener when I worked at Eaton Aeroquip. I might be able to help some of you with questions, but like Greg I am far from an expert. I do have some experience with rare metals, so I might be able to help there a little more. I have welded several alloys of inconel and titanium.



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