[Skiddz]

Do you have the ability to adjust arc force?

There is an Arc/Dig setting on the machine, but I haven't played with it. I downloaded the manual for the machine (Miller XMT 304) and will do some reading tonight when I'm done with the "Honey-Do" list for today.

Stick with it, you'll get it. Really hone in on that puddle. Change hoods if need be (I find a fixed shade gives me a MUCH better view of the puddle) so that you can really see what's going on with the puddle, and maybe get a demo from a few different (competent) welders while watching how they handle their puddles, then spend the time. Don't worry, you'll get it...

I've played with the shading on my hood. Found that just shy of 9.5 seems to offer me the best view. Anything lower and it's leaving purple spots in my vision when I'm done. I did get some one-on-one with the instructor and that did help with 6010 cover passes. There is a lot to look at while you're running beads. Puddle, arc length, where you're going, any occlusions that need a little extra time etc. I'm sure I'll get it, just need more time under the hood and some direction on what I'm doing right and what I'm doing wrong.

I was working on a 5/16" thick underground gas tank last year. The tank was heavily corroded, the rectangular frame I was surrounding it with was also heavily corroded. I needed to run 48' of vertical weld to join tank to frame. The metal was NASTY rusted, and i reached a point where grinding had gone 1/16" deep into all surfaces, and deep pits still remained.

Minnesota Dave coached me some, and CEP over at Welding web suggested turning up the heat, and running a U shaped bead to blow out old, corrupt metal, replacing it with new. That strategy worked for me. Clean metal makes all the difference, but if you have clean, why not use 7018?

This is all in a class and you have to learn to walk before you can run so we started with 6010. Our cert test will be vertical uphill, open root 6010 with 2 7018 cover passes. If I can get the 6010 down, the cover passes will be cake.

Completely unrelated (Well, sort of) question since you all have way more experience than I... If I had a budget of $1000-$1200, what would be a decent multi-process machine to pick up? Input power is not an issue as I can install a 220V circuit in the garage in a couple hours. I don't need a Mig/wire feed gun at this point, but it would be nice... Don't really care about the brand as long as parts support is good and it's got a reasonable duty cycle for home/hobby use.

[Poland308]

Set the arc force for about 5. It will give you some dig but soften things up a bit. Maybe enough to get rid of your undercut at the edge. Granted you could even go down to 2 or 3 but it’s not a magic wand. It will often help if the undercut is very small. Especially if you run fine with similar settings in the horizontal.

[Skiddz]

Set the arc force for about 5. It will give you some dig but soften things up a bit. Maybe enough to get rid of your undercut at the edge. Granted you could even go down to 2 or 3 but it’s not a magic wand. It will often help if the undercut is very small. Especially if you run fine with similar settings in the horizontal.

Reading the docs for this XMT machine, it doesn't explain very well what the Inductance/Dig control does - at least not in a way that makes sense to a rookie like me. I did, however, find a thread on the Miller forums that explained it a little better, and, had a suggestion to run 6010 at 60% and 7018 at 20-30%. I'll have to play with it a bit on Tuesday night.

[aland]

Reading the docs for this XMT machine, it doesn't explain very well what the Inductance/Dig control does - at least not in a way that makes sense to a rookie like me. I did, however, find a thread on the Miller forums that explained it a little better, and, had a suggestion to run 6010 at 60% and 7018 at 20-30%. I'll have to play with it a bit on Tuesday night.

Skiddz,

I was having an issue on my machine, and hadn't paid much attention to it. I realized the next day after thinking things through, and was looking in the manual. I saw the ARC Force and checked the setting, which was down around 5%. I was having problems with both 6011 and 7018...

Jody has an XLNT video you should watch where he talks about it. His numbers are almost exactly the same as what you got on the Miller forum.

(this is from a slide in the video)

"“ARC force” aka “DIG” increases the amperage when your arc shortens to help prevent Sticking. Higher settings like around 65% are recommended for 6010 and lower setting of around 30% for 7018”

Here's the video:

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With that said, in other videos Jody shows running 7018 at a much higher ARC force, up around 70% and it it still welds fine for him...and he describes 7018 as being "buttery" at around 30%. HIs point was that sometimes you need a little extra bite and turning up the ARC force (DIG) can help...in that case you need to adjust your arc length to keep the stick burning nicely. For me it was like night and day with 6011 (similar to your 6010), once I turned the ARC force up to about 65%. it just started working, where the 5% made it almost impossible to even keep an ARC.

DISCLAIMER: take what I say with a grain of salt, I ran into a problem with ARC force recently and found Jody's video after searching on the web. it is difficult to find too much info on it. Jody's video above is about the best I've seen online at explaining it.

Alan

[Poland308]

If you’ve been running consistent beads. Then you will notice arc forces biggest visual que is at the toes of the weld. The edges will flow and wet in different. More arc force will cause them to dig in / less will flow more. I tend to crank up mine if I’m welding on rusty or painted stuff.

[Skiddz]

Skiddz,

I was having an issue on my machine, and hadn't paid much attention to it. I realized the next day after thinking things through, and was looking in the manual. I saw the ARC Force and checked the setting, which was down around 5%. I was having problems with both 6011 and 7018...

Jody has an XLNT video you should watch where he talks about it. His numbers are almost exactly the same as what you got on the Miller forum.

Thx for the link to the vid. I took a pic of the machine at the last class so I could get the model off of it and DL the manual. Just for giggles, I took a better look at it to see where the Inductance/Dig knob was set. It's right around 30 so I'm definitely going to dial it up on Tuesday night and see how it goes.

If you’ve been running consistent beads. Then you will notice arc forces biggest visual que is at the toes of the weld. The edges will flow and wet in different. More arc force will cause them to dig in / less will flow more. I tend to crank up mine if I’m welding on rusty or painted stuff.

Yeah, I can run fairly consistent beads flat and horizontal. With 7018 I can get the toes to flow out pretty good if I can get my travel speed "correct". Too slow and it tends to stack up and sometimes "roll over". Too fast and the beads get concave and it gets hard to fix that when doing stacked fillets. Like i said above, I'm definitely going to mess with the Dig setting over the next couple classes and see how it goes.

I've almost talked myself into buying a Millermatic 210 so may be able to get in even more practice at home by this time next week.

[Lightning]

I've almost talked myself into buying a Millermatic 210 so may be able to get in even more practice at home by this time next week.

Isn't that a mig machine? If you can run 6010 with that, you're a whole lot better than me!

[Poland308]

That makes sense 30 or 3. Depending on manufacturers. Is about what most guys run with 7018. Try 5-8 on the 6010.

[Skiddz]

Isn't that a mig machine? If you can run 6010 with that, you're a whole lot better than me!

Sorry, MULTImatic 215...

[Skiddz]

Did a little more horizontal tonight. Played with Arc Control when doing 6010 passes. Looks like 67/68 is the "sweet spot" for this particular machine. 7018 seemed to like right at 20. 6010 Root passes actually looked decent and only a couple REALLY small sections of undercut and I'm pretty sure I can eliminate them with a tick more "pause". Ran 10 passes (Stacking fillets) on each side and then cut the work pieces in half to check penetration etc. Had a small pore in an area pass number 3 would have been and I think it might have been where I had a restart. Still can't get them quite right, but definitely getting better.

After cutting, we went back to vertical. Ugh. T joints, 6010 root pass, 7018 cover. Laid down the first 6010 root pass using an inverted T motion. The first two inches were actually pretty nice (see pic) and then it all went to pot. Lost my rhythm and couldn't seem to stay focused on the puddle. Kept sticking rods on arc strike and actually managed to snuff the arc a couple times by going too deep. Not sure if I was tired/frustrated or just having an off night. Everyone in the class is still struggling with this vertical stuff.

6010 root pass, vertical, uphill

20180220_193104.jpg (45.55 KiB) Viewed 4665 times

[Skiddz]

Wow! Had the proverbial light bulb come on tonight towards the end of class. Laid down a pretty decent (for me anyways) vertical uphill root pass with 6010. Other than a semi-pooched restart, I'm pretty happy with this one:

20180221_193623.jpg (140.03 KiB) Viewed 4368 times

Now I need to start a 7018 vertical uphill thread. Still making dinosaur tails with that stuff...

[Lightning]

Lookin good.

Now try it again with a good fixed-shade shield.

[MinnesotaDave]

Yep, you're on the right track now

[Skiddz]

Lookin good.

Now try it again with a good fixed-shade shield.

I don't know if I'd go with "good", but I think MinnesotaDave hit it right on the head below:
Why fixed shade?

Yep, you're on the right track now

And, in what's pretty typical for my life, we start MIG tonight so won't get any more stick practice unless I pull the trigger on my own machine.. At least I know what I did and can likely repeat it after a little practice and (hopefully!) improve from there.

[Lightning]

Why fixed shade?

The better you can see the puddle, the better you can weld.

[Skiddz]

Why fixed shade?

The better you can see the puddle, the better you can weld.

Got my auto-darkening dialed down to about 8.75. I can go lower, but then it starts getting a little too bright..

Sent from my SM-G900V using Tapatalk

[TheWeldingConnector]

Why fixed shade?

The better you can see the puddle, the better you can weld.

Got my auto-darkening dialed down to about 8.75. I can go lower, but then it starts getting a little too bright..

Sent from my SM-G900V using Tapatalk

That seems a bit low to me but everyone has a different light tolerance. I normally use a shade 11 or a shade 10 with dark safety glasses for anything under 150 amps and a 12 for anything over but for most people that is too dark. I find I have a harder time seeing the puddle if I do not have a dark enough shade.

[Skiddz]

Why fixed shade?

The better you can see the puddle, the better you can weld.[/quote]Got my auto-darkening dialed down to about 8.75. I can go lower, but then it starts getting a little too bright..

That seems a bit low to me but everyone has a different light tolerance. I normally use a shade 11 or a shade 10 with dark safety glasses for anything under 150 amps and a 12 for anything over but for most people that is too dark. I find I have a harder time seeing the puddle if I do not have a dark enough shade.

Never really thought about going darker. Couldn't hurt to try, right?

[Skiddz]

Quick follow up. Finished my FCAW 3G cert test last week so have been messing around over the last few classes. Tried some 6010 again last night. Still got the flat and horizontal stuff down (Some of my beads were actually pretty nice!) and then tried vertical uphill (3F) again. Sort of still have it, but it got ugly towards the top. I was hoping to get my 3G SMAW test done but tonight is the last class so that's doubtful...

[WeldingJunkie]

Tweake you are right. Hes trying to run uphill is straight DCEN, that's def his issue.