| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,076 Posts1,055,920 Members48,429 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2001 Posts: 578 'Bolter | | 'Bolter Joined: Oct 2001 Posts: 578 | Somewhere along the line, I was told to set my gas pressure at 10 psi, I just watched a Miller video that said 20 - 30 psi.
Am I way low? Maybe that's why my fender work looks so (expletive deleted).
"Happiness equals reality minus expectations" - Tom Magliozzi
| | | | | Joined: Jun 2009 Posts: 2,201 Shop Shark | | Shop Shark Joined: Jun 2009 Posts: 2,201 | My pal Jeremy does all the welding, but I have noticed that he has ours set on between 15-20 all the time. He can really lay a nice bead. | | | | | Joined: Mar 2004 Posts: 874 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 874 | I'd say you're way low. 20 to 25 CFH (not PSI) is a good starting point. Of course Miller should know what they are talking about, but you probably won't need the flow rate as high as 30. Try some different settings to see what works best for you. Practice on scrap first! | | | | | Joined: Jul 2009 Posts: 70 New Guy | | New Guy Joined: Jul 2009 Posts: 70 | I go with 25 on the gas regulator my hobart handler 135. 10 is too low and will give you poor penetration and not much sizzling bacon sound...
| | | | | Joined: Oct 2009 Posts: 5 New Guy | | New Guy Joined: Oct 2009 Posts: 5 | 15-20 is perfect unless it is being blown away ie door open furnace blowing fan sucking all these things may take the gas from the welds and u will need to up press otherwise just a waste | | | | | Joined: Oct 2007 Posts: 388 Shop Shark | | Shop Shark Joined: Oct 2007 Posts: 388 | I use 25 works good for me, I have Hobart 140 Mig welder
Ganesh | | | | | Joined: Oct 2001 Posts: 578 'Bolter | | 'Bolter Joined: Oct 2001 Posts: 578 | Thanks for the tips, I just picked up a Mig Master flowmeter on Ebay for $25. I think I'm supposed to be looking at 5 cubic feet per hour.
"Happiness equals reality minus expectations" - Tom Magliozzi
| | | | | Joined: Mar 2004 Posts: 874 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 874 | "I think I'm supposed to be looking at 5 cubic feet per hour"
Jim,
As I mentioned previously, a good starting point for your gas flow rate is 20 to 25 CFH. (cubic feet per hour) | | | | | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Also make sure you have the gas tip on the gun and the polarity set correctly for welding with shielding gas. It is opposite polarity of flux core. My gun came with a plastic flux tip and a copper gas tip. I forgot to switch once.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | | | | Joined: Oct 2000 Posts: 804 Shop Shark | | Shop Shark Joined: Oct 2000 Posts: 804 | As you will find in my "Basics of Basics" on MIG welding, (Click here for the Basics) "25-30 cubic feet per hour or 3-4 PSI." This is right from the AWS (American Welding society). First things first, does your MIG have a "Flow" meter measureing guage or a PRESSURE guage? If it's measureing flow set it at CFH or is it pressure at PSI? And I just noticed in my article it says cubic feet per MINUTE instead of HOUR! I'll have to correct that. Anyway, look at your guage and see what it says you are measuring. Brian
1948 Chevy Pickup
Chopped and sectioned
owned since 1974 when I was 15.
| | | | | Joined: Oct 2001 Posts: 578 'Bolter | | 'Bolter Joined: Oct 2001 Posts: 578 | Thanks Brian,
I printed your article out for my shop notebook.
"Happiness equals reality minus expectations" - Tom Magliozzi
| | |
|
|
| |
