3/8 plate penetration with .035 mig

[Don H]

You will not be able to spray with 100% CO2.

[ryanjones2150]

Get some dual shield wire. That should give you all the penetration you need.

[koolken]

Only have 90/10 mix available. Found 24.5 and 460 wire speed wasnt too bad.

[H80N]

You try running straight CO2?

Good Thought.....

CO2 will give you better penetration... and is cheaper.... bit more spatter though..

here is an interesting comparo by Jody..

https://www.youtube.com/watch?v=56DW398n_fA

[ryanjones2150]

You try running straight CO2?

[gnforge]

Miller has some good video on subject. Explaining. <br />
Short circuit good<br />
Globular bad, should try stay out of this. <br />
Spray good, actually great!!! <br />
99% of all my welding is in spray but I normally weld thicker metal as general rule. But I feel that spray is the best of the three. <br />
On thin metal I just switch to pulse but still in spray. <br />
One other point I'm using metal core wire which is designed for spray but all things considered I'll never switch back. Higher quality weld. <br />
Watch those videos it explains a lot. <br />
Greg

[gnforge]

Miller has some good video on subject. Explaining. <br />
Short circuit good<br />
Globular bad, should try stay out of this. <br />
Spray good, actually great!!! <br />
99% of all my welding is in spray but I normally weld thicker metal as general rule. But I feel that spray is the best of the three. <br />
On thin metal I just switch to pulse but still in spray. <br />
One other point I'm using metal core wire which is designed for spray but all things considered I'll never switch back. Higher quality weld. <br />
Watch those videos it explains a lot. <br />
Greg

[koolken]

Had a discussion with buddy about welding 3/8 plate with .035 wire. He thought it shouldn't be a problem to get enough penetration with 22 volts and about 350 wire speed. We played around and did some bend tests on some coupons and i couldn't get enough penetration until i upped my volts to 26.5 volts and 450 wire speed. I know it was spray but i couldn't get enough penetration with short circuit. Was great at those settings but any less i didnt get any fusion. That's on flat and horizontal position.