Does anyone know what it is?

I'll probably email colin, and ask, but there is a formula for calculating the proper e-steps if you know what that is. just curious if my calibrated e-steps is near the calculated value.

here's the formula for those that are also curious.

e_steps_per_mm = (motor_steps_per_rev * driver_microstep) * (big_gear_teeth / small_gear_teeth) / (hob_effective_diameter * pi)