mig and flux core tips and techniques, equipment, filler metal
caltom
  • Posts:
  • Joined:
    Sun Jul 12, 2020 11:15 pm
  • Location:
    N. Texas

I’ve been looking at converting my Tweco fusion 220 mig gun to take standard consumables for the Tweco #2 gun. The neck is just a copper tube. I think I can cut off the external threads for the Fusion nozzle, then thread the inside 3/8-24 for a #52 diffuser and then use #22 nozzle, #14 tips and #32 insulator. My local hardware store has all the parts except the insulator.

The problem I’ve been having with the fusion system is the nozzle and diffuser are made together, so it can’t be cleaned very well. It accumulates a lot of crap and splatter inside, shorts the diffuser to the nozzle, and plugs up the gas flow. I also think the Fusion tips don’t seat well into the diffuser and depending on gun angle/lead twist, the liner pushes them out and they make poor contact. Another benefit is the standard consumables are cheaper than the fusion stuff.

Am I missing something on doing this? It seems simple.

The pictures are of a nozzle I drove the diffuser out of. A lot of spatter fell out it.
Attachments
Diffuser
Diffuser
2B6BD45D-79D9-45BC-95B4-B24EC965DDC2.jpeg (80.91 KiB) Viewed 1075 times
Nozzle gunk
Nozzle gunk
51BD8672-2BC0-4BA2-B78C-F8688AC05AEF.jpeg (35.27 KiB) Viewed 1075 times
Parts
Parts
2EDE4915-C4B5-43F2-B686-FAAFE5E2F1E5.jpeg (112.9 KiB) Viewed 1075 times
caltom
  • Posts:
  • Joined:
    Sun Jul 12, 2020 11:15 pm
  • Location:
    N. Texas

Yep it was that easy. $38 in parts. It welds very well, much less dependent on gun position and lead twist.
Attachments
54919E29-7D81-412E-B5A8-9D2340B2667F.jpeg
54919E29-7D81-412E-B5A8-9D2340B2667F.jpeg (42.77 KiB) Viewed 1021 times
91FF4DD1-987F-4156-B831-D7BEA1EE6BC9.jpeg
91FF4DD1-987F-4156-B831-D7BEA1EE6BC9.jpeg (29.55 KiB) Viewed 1021 times
CDCFBF88-5B4C-4A94-B7C4-548F63B2DA8C.jpeg
CDCFBF88-5B4C-4A94-B7C4-548F63B2DA8C.jpeg (42.26 KiB) Viewed 1021 times
Post Reply