I don't have any 6010's or 6011 rods I have tried them don't like the welds they/I make with them to much porosity. I can make some nice welds with 6013's. I appreciate everyone looking out for my safety. I know the laws of unintended consequence's and have the scars to prove it.LOL
Just trying to pass on a little knowledge so you wont rule out those rods for future projects.
6010 and 6011 both look nasty after welding due to the flux but once the flux is cleaned off the weld is nice as long as the welder does his part.
The porosity was not from the rod unless;
*The flux was damaged or missing
*You were welding on some nasty metal with issues
*The rod was held too far from the material being welded (long arcing it) and the flux will not be able to do it's job to seal the molten metal from the atmosphere until it cools.
*You were using to low of amperage (Which would have been hard to weld)
6011 and 6010 are both one of the best and most universal rods that can be used in the welders arsenal right up there with 7018.
They can be used to weld
*over heavy paint
*greasy coated steel
*a little bit of flux covered steel
*It has violent penetration but is so flexible and controllable with amperage.
*It will fill gaps and holes without having to chip away much of the flux.
6013 will work and it is prettier but it cannot compare to what can be done with the 6010-6011
Just trying to help.
.......SmokeRolls