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Help With My TIG Torch

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发表于 2021-9-1 00:10:48 | 显示全部楼层 |阅读模式
Don't know what I did, probably just boogered up the threads from having to clean my tungsten so much. But, I can see a single thread that is cross threaded in my tig torch. It's a PTA-17 that goes to a Lincoln Precision TIG 225. I'd like to just run a tap through it and clean them up since the cap screws in over half way and then catches. Best I can tell, it's a 3/8" diameter with 32 pitch.  Or it might be a 10mm-0.8.  Seems ultra fine threaded. But, I can't find a tap for this.  Am I going to need to buy a new torch?  Any suggestions?
Reply:I overheated a WP-9 torch on some aluminum with my Squarewave Tig 175. I went to my local welding supply and ordered a new torch head from Weldcraft and was back in business for about $30 (give or take a few dollars).KevinHobart Handler 210Tweco Fabricator 181iLincoln Squarewave Tig 175
Reply:If the threads are messed up, I would just buy a new torch body. You can buy them for about $30. I messed up my threads by cranking on the cap and had to buy a new one myself. If all the threads don't catch. you may not get a good seal and that will cause problems.kidtigger24  They think I’m crazy, but I know better. It is not I who am crazy. It is I who am MAD!
Reply:You're right, it's a 3/8-32 bolt thread. You can get a tap from mscdirect.com, #65062226 for around $14. Had a similar situation myself. Now I keep a tap in the drawer. I believe you'll find that the threads are continuous all the way through the torch head, so just start tapping from the good end.
Reply:Better check the opposing part too.Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:your going to want a chaser tap, not a cutter tap. You dont want to cut new threads just straighten out and clean up the old ones
Reply:They are usually done for. I just keep spare heads. Take a good look at anything you screwed INTO a damaged torch thread too.After working a welding school toolroom I don't spend extra for "quality" heads since they are still very easy to trash. I take care of the cheap ones I buy so they last long enough to be a good investment, but I don't miss them when one dies.
Reply:Originally Posted by welds4dYou're right, it's a 3/8-32 bolt thread. You can get a tap from mscdirect.com, #65062226 for around $14. Had a similar situation myself. Now I keep a tap in the drawer. I believe you'll find that the threads are continuous all the way through the torch head, so just start tapping from the good end.
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