Cnc cutting the wrong size..

[HankMcSpank]

Increase your present 'steps per unit' (motor) setting by 25% ....then a present 80mm cut will become 100mm.

Goto the motor settings of your CNC app & for example, if the steps per unit are presently 500, change it to 625 etc (625, equates to 500 + 25%)

(btw your motor setting almost certainly won't be presently set for 500 .... it was just an example!)

[Mansour1974]

Thanks Hank
I was looking for this solution since 2 days, mine was 320 steps per unit, I change it to 400
it is perfect and accurate now.

thanks again :)