this might be nit-picky... in 3f/3g (vertical) 601X is run downhill.... 7018 is uphill
Not really. By running it uphill it will self pre-heat. It isn't pipe, just high carbon bedframe.Do a spark test on old bed frame, most old bed was made before A-36. The AWS doesn't much care how hobbyists run 60XX. That being the case, 6011 is better for beginners than 6010, since it will run on lower voltage PLUS most home buzzboxes are AC only and will not run 6010.
A thunderbolt maybe better than a Lincoln buzzbox, at least the newer aluminum ones, but will not hold a candle to an actual tombstone Lincoln, 250/250 AC/DC. That is a sweet, powerful smooth running machine. ( I have all of them).
6013 is a clean metal rod, low penetration, designed for sheet metal fab, it doesn't have much place on farms, doesn't have much of a home at all in fact, since the advent of cheap MIGs in most every shop.
By the way, when ironworkers do light work, it isn't uncommon to run 7018 downhill for a very flat, smooth weld.
For structural purposes, uphill only.
Finally, don't be dismissive of heavy metal fume poisoning, the effects are cumulative and easily fatal when over-exposed.
One very good friend who should have known better, died so that the rest of us could live. I would be more concerned about cadmium by the way, a commonality in the brain matter of mass murderers has been excess cadmium.
Don't really want to play the who has a bigger rod game, just clarifying. The problem with trying to separate out procedures from professional to hobbyists is that hobbyists can get their claws onto work which can kill innocent people too, such as trailer hitches and truck frames for example.
Best to just give the same accurate info to all that ask and hope for the best.