After following one of the links in one of the threads you guys provided, I have pretty much settled on a design.
http://www.cnczone.com/showthread.php?threadid=1356
I loved this torsion box idea and I am going to use it for my x and y axis. If someone can let me know how to post a picture of my autocad drawing, I will post it here. I like the drill rod idea, but I dont like the extra shipping and duty to get it to Canada. Does anyone know of suppliers north of the border? I am going to use rollerblade bearings still, not the bushings.
co