Try a 3/32" gap, a little over a dime landing and turning up your heat some. It also depends on the size electrode your using. I use 1/8" most of the time, but in some case's I have dropped down to a 3/32" rod. 6010's gonna leave some slag, but a good ole' wire wheel can take care of that. It take's some trial and error, but you WILL get it.
Nov 08, 2009 Rating
6010 is the way to go by: Anthony F.
I have always rooted with 6010, even testing. Although some may use 6011 or others, I find 6010 seems to cool a little quicker and with less flux in the way. If it seems your not getting the penetration try opening the gap a bit, about 1/8th inch and turn up the heat, or try pushing the rod in a bit deeper. as for cleanliness, wire wheel is the way to go. cleaner doesnt always mean better.