introduction to bowl mills Coal is the one of the most dominating energy source because of its cost, availability and transportability. Pulverized form of coal has made modern steam generating units highly thermal efficient, reliable, safe and able to efficiently use of lowgrade coals.
Older Grbl versions had a default feed rate setting, which was illegal and was removed in Grbl Are you trying to move it with a G1? That requires a feedrate, "G1 X1Y1 F40". I don't believe G0 requires a feedrate as it works at max feed rate.