Make the machine more rigid
Over the past month I have been unable to use the machine due to a z axis motor stall problem. A big contributor is the machine is not dynamically rigid in the y axis (see my post).
The fix would be to extend the lead screws to the same length as the linear bearing rails, add a ring bearing to the top, and put plastic vertical buttress supports that house the ring bearings (basically duplicate the plastic buttress support of the linear rail on the sled’s y orientation.