- Joined
- Aug 17, 2018
You want closed-loop motors.Those are just for the Z-axis. I mean something that gives you absolute X, Y, Z coordinates of the print head. Wouldn't this mostly fix inter-layer shift?
They can accurately keep track of how much the motor turns, usually using an encoder wheel (like a how a mouse scroll wheel works), so it can compensate for the stepper motor missing steps, which is the cause for layer shifts.
Those don't need to be absolute, you already get the absolute position through the end stops - you only need to accurately keep track of the distance travelled relative to that.