[mateusz1945]

actually question is how the hell do i adjust stepper to make 2 revolutions per second so trimpot can be adjusted and "sweetspot" can be heard.

Guys please, i get so confused feed rates, revolutions,pulses , how do i reach 2 revs per sec?

i am using mach3 in metric settings
Attachment 208534
those settings works fine

[DLorenz]

You left out on important detail, assuming your machine is calibrated correctly and for example 1 rev=1mm then 120 mm per minute=2 revs per second. I find that 'tuning' Gecko 251's as are in a g540 has little effect; however from the MDI enter something like g1x100f120 (make sure your your axis can move here!) correct this formula to match your actual number of turns required to produce 1mm of movement!

[mateusz1945]

turns out my lead screw got 5mm per revolution. After calculations looks like my feed rate should me 600 to get to 2 revolutions per second.
now i dont really know how sweet spot sound should sounds like, i guess i will earball it. thanks for help!