6010 vs. 6011 for root pass

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Miller says they don't recommend running 6010 rod on my 215 Multimatic, bit 6011 is ok.  I would like to know the rationale behind such a recommendation [I'm supposing the rod perhaps needs a lot of amps?]   Now as to 6011 for a root pass, ... does that play well with 7018 for a final pass or two, and any preparation issues I need to be aware of?   I'm hoping some of you experienced pros might be able to share with me the whyfor's and the howto's related to this scenario.  thanks!Miller Multimatic 215Spoolmatic 150 spool gunPrimeweld Cut 60 Plasma CutterVevor Pipe StandsBauer Portaband/Swag tableGrinders-Milwaukee, Porter Cable, DewaltArcUnion M-20 portable rod oven
Reply:Many inverters wont run 6010. It keeps snuffing out. But most any inverter will run 6011 fine. Unless you are doing X-ray tested welds, 6011 for the root pass should be fine
Reply:My ESAB 161 and Miller Dynasty 200DX will run a 6010 great!  Inverters will run a 6010 better than a transformer or buzz box.   6010 is a more difficult rod to run, kinda depends on the results your looking for.   I think a 6010 is a deeper penetrating and dryer bead and the 6011 is a softer and wetter bead with lots of penetration swell.We've done so much, for so long, with so little. Were now qualified to do anything with nothing !
Reply:It may have to do how inverters worksInverters us a alternating DC or some say one side AC or 1/2 wave at a very high frequency .  Cut the amount of copper need for a welder. Dave

Originally Posted by RCWelds

Miller says they don't recommend running 6010 rod on my 215 Multimatic, bit 6011 is ok.  I would like to know the rationale behind such a recommendation [I'm supposing the rod perhaps needs a lot of amps?]   Now as to 6011 for a root pass, ... does that play well with 7018 for a final pass or two, and any preparation issues I need to be aware of?   I'm hoping some of you experienced pros might be able to share with me the whyfor's and the howto's related to this scenario.  thanks!
Reply:

Originally Posted by welding1

Inverters will run a 6010 better than a transformer or buzz box
Reply:Why does everybody think they have to have a 60XX root? Are we welding pressure pipe with an open root? If it's a lawnmower deck, just weld it.
Reply:

Originally Posted by 12V71

Why does everybody think they have to have a 60XX root? Are we welding pressure pipe with an open root? If it's a lawnmower deck, just weld it.
Reply:

Originally Posted by 12V71

Why does everybody think they have to have a 60XX root? Are we welding pressure pipe with an open root? If it's a lawnmower deck, just weld it.
Reply:It is easier to fill with E6013 but I can fill with E7018 too.Dave

Originally Posted by MetalMan23

All I know is that 60xx rods are great at filling a gap that you could never fill with a 7018, Sent from my fab shop using a mig welder and a grinder