Thanks for all answers My plan was to start with a belt for the three z-axis. Then later "upgrade" to 3 independet steppers for autoleveling. But like the_digital_dentist says, it is better to build a rigid frame. If I fix my current XY gantry to a 20x20mm T-slot cube frame, will it be strong enough with the u-shape I have? I like the open front for accessibility. Anyone using Dibond? the alby McZ - CoreXY Machines
Any issues with my idea of a CoreXY design with fixed bed? using 2x300mm MGN12 rails for Y and 1x400mm MGN12 rail for X. And then there is 20x20 T-Slot extrusion holding the Y rails and they are fixed together with a 20x60 T-Slot in the back. I have 3 lead screws for the z-axis (200-300mm) and I am planning to use one stepper for each screw, to get the bed leveling like the Sparkcube v1.1 XL.by McZ - CoreXY Machines