There have been several comments posted regarding the ox and other GT3 belt driven systems seeking suggestions on how to reduce the rate of motion from the current 60mm per revolution to something smaller to improve resolution. The following concept should provide a simple drop-in solution that will cut the rate of motion in half and greatly improve the strength of the motors through simple gearing. Please accept this as a work-in-progress as I am still collecting parts for both it and the machine it will be attached to. Depth of the recesses for the FR188-ZZ bearings and the thickness any shims required along the 1/4" axle have yet to be determined. Basic Concept Parts Breakdown Y-Axis Attachment Note main belt tightening can be performed using existing slotted holes. Motor belt is tightened using short slots in the motor attachment plate. Note, this arrangement eliminates the substantial lateral forces that were originally imparted on the motor from the main belt. Tightening forces against the 55T O-belt need not be too significant. X-Axis Attachment It should be noted that with the square mounting pattern, the assembly can be oriented in several different positions but may require shimming with some orientations to resolve conflicts with adjacent bolts. The 55T belts and the 40T pulleys are being sourced from B&B. The 20T pulleys will be sourced from the parts store.