| ausmini https://www.ausmini.com/forums/ |
|
| MIG question https://www.ausmini.com/forums/viewtopic.php?f=2&t=57820 |
Page 1 of 1 |
| Author: | Wombat [ Sun Oct 11, 2009 4:59 pm ] |
| Post subject: | MIG question |
I'm working on the Mini so it's Mini related 
Tutorials and How To's on MIG welding say or show the contact tip protruding about 1/8" past the end of the gas shroud. My MIGs original setup and the replacement bits I got the other day are the opposite with the tip inside the shroud about 1/8" - what is correct? (or better) |
|
| Author: | Phat Kat [ Sun Oct 11, 2009 5:17 pm ] |
| Post subject: | Re: MIG question |
Wombat wrote: I'm working on the Mini so it's Mini related
Tutorials and How To's on MIG welding say or show the contact tip protruding about 1/8" past the end of the gas shroud. My MIGs original setup and the replacement bits I got the other day are the opposite with the tip inside the shroud about 1/8" - what is correct? (or better) G'day Wombat, how've you been? The set up that you have is better suited to sheet metal 3.3mm and thicker, for lighter stuff like mini bodies you do want your contact tip to extend past the shroud by 3.2 mm (think thats the common size). But its no secret that I'm not big on MIG personally so I don't use it that much. The Doc used to work for Rheem as a fitter so he has HUGE amounts of MIG experience, hopefuly he will stop by and offer his 2 cents  Cos he probably knows a few MIG tricks that I don't.
|
|
| Author: | Angusdog [ Sun Oct 11, 2009 6:24 pm ] |
| Post subject: | |
My MIG has the tip about level with the shroud, which works okay. However a lot of people recommend trimming the shroud so you can see the arc better. A longer shroud may help with shielding gas, but if yours is the normal type, you can pull the shroud forward up to 1/2 inch if you're having problems with the shielding gas getting blown away. |
|
| Author: | Wombat [ Sun Oct 11, 2009 7:13 pm ] |
| Post subject: | |
Angusdog wrote: you can pull the shroud forward up to 1/2 inch if you're having problems with the shielding gas getting blown away.
Mine is screw on - fix distance - guess I'll have to attack it with a hacksaw |
|
| Author: | drmini in aust [ Sun Oct 11, 2009 10:18 pm ] |
| Post subject: | |
With small wires you use less wire stickout from the tip than big wires, the general rule here (ref Linde Gas's MIG data sheets) is 13x the wire diameter for good starting and running. Applies to all wire sizes. I have the contact tip about 3 or 4mm outside the shroud. Makes it easier to see the arc, puts much less spatter in the nozzle too. |
|
| Page 1 of 1 | All times are UTC + 10 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|