Hi Rob,
Looking at your Z-axis movement, I will be having a similar glide. Are you planning to move your z-axis drive motor and screw up and down with the z position while having the nut stationary ? On mine, this would require the motor to project upward increasing the height by the length of the motor, and moreso when the Z-axis is fully retracted....unless you can mount the motor out behind the gantry (y-axis rails) in a downward position.
I've seen other designs that have a stationary motor and screw while the nut moves the axis up and down, but this design won't lend to that type of function.
Bloy |