I've started on doing open root V grooves at school. The teacher there is excellent, but I always like to hear other people's opinions and ways of doing things as well, especially on the more advanced topics.
He has me starting with 3G, 1/8" lands and gaps, with 1/8" 6010 electrodes.
I'm specifically interested in how you guys like to set your heat and control the keyhole size for the root pass.
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