About this 3D model
Cablemount8b - clips into the 5.5mm slot on the top of the gantry carriage plates http://www.buildlog.net/documents/c14012_rev_4.pdf It clips into 1/4-inch split-loom tubing (http://www.harborfreight.com/1-4-quarter-inch-x-14-ft-protective-wire-wrap-66985.html) cablemount5b - (untested) mounts to the handle plate and accepts the 1/4 tubing