It's called weaving in English. While welding <1mm materials with SMAW is possible it's not really the preferred method, brazing, TIG, or gas welding would be and to a lesser extent MIG and FCAW. But with the right size/type of rod and the correct amperage it is doable especially with modern HF modulation. The problem with thin materials and SMAW is heat soak, it's the thinner materials ability (or lack there of) to dissipate heat. Meaning the piece will become to hot and the heat affected zone to big to continue welding. But there are lots of tricks out there, like using large pieces of aluminum clamped to your work to act as heat sinks, or using heat sink paste like Cool Blue or Heat Trap. Also stitching, welding in short bursts and alternating locations. My dad (a life long pipe fitter and rail car fab welder) always said that "welding is 90% muscle memory and 10% situational awareness." A common saying among real welders is that "If I can step across it I can weld it." With the a little bit of knowledge, a LOT of practice, a fair amount of ingenuity, and the right filler materials any two ferrous metals can be joined with any process. Don't get to hung up on using the right process for what your welding but rather pay more attention to using your process right. SMAW was the industry standard for arc welding for nearly 40-50 years before the advent of MIG, FCAW, & TIG in the 50's and even then those process were not available to shade tree Sammy for nearly 20 more years and were still very expensive. I've seen a lot of autobody work done with a Lincoln Buzzbox and some 1/16-6013 some of it looked ok most did not.0.8 is thin I don't think it is possible with stick weld at least it was not.
( Not talking spot here )
When I worked with sheet metal 70 ies .. 1 mm could go SoSo
And experts could do it even with big electrodes
Perhaps the auto masks gives more time today to get it right.
Higher Current then it gets difficult to start without blowing a hole immediately
I have watched a skilled operator once ...co worker welding 1.0 mm with a big electrode
ca 3 mm diameter. Without stopping Through an extra mask not believing he could do it
When he started and if the melt was beginning to fall trough starting to become a hole
One could see that coming
He was able to move the stick a little ---is it pendling moving the electrode in English
Without stopping in a movement that he varied . Not the same But instead depending on how it looked at the spot that
looked as falling through . and then move back and forth to the place that was close to burn through.
Not stopping welding and not solidify the weld.pool . It was a Restaurant fan cover. Mild steel .ca 1 meter 1 .5
long weld.
He got one or two holes but the rest was non stop.
Have not heard of anyone else capable of that . But feel free correct me if those more into daily welding
See it differently
He had some kind of Welding License don't know which. . And I have never heard of anyone else being able to do it
0.8 is thin
And yes to that
Learning how move fast with precision is the real trick..