OpenSCAD Threadless Ballscrew - Highly Customizable

I have been waiting for my bearings and smooth rod to come in to post this. I recieved everything and dry fitted the bearings. They seem to work pretty well. I am hoping they will hold the weight of the solidoodle bed.

This is an openSCAD adaptation of http://www.thingiverse.com/thing:112718. The idea is [Mark Sollack's][1] but the code is all mine. I added a quite a few options like support for up to 5 bearings, adjustable bearing size, selectable smooth rod size, customizable mounting hole