Ultimaker-Electronics ===================== Large Ultimaker box design Designed by Ultimaker origional modified by Bruce Wattendorf licensed under the Attribution - Share Alike - Creative Commons license. http://creativecommons.org/licenses/by-sa/3.0/ I have cut this and found that the Z axis needs 3 steppers which can be driven by the same stepper driver. Also the build platform needs 2 more solid rods in the front. Changes to be done move the electronics to the back the cable gets in the way add lcd and encoder add 1 more z axis stepper in the front make slot for the sd card in the side close to the electronics reinforce the build platform solid rods mount and make the floating one fixed like the right side