About this 3D model

thing:3202 is awesome, but the belt rubs against the carriage, so thing derivative is an attempt to fix that. The latest version of the openscad files and STLs is available from http://gitorious.org/hacks/things/trees/master/makerbot-y-stage Movie of it in action: http://www.youtube.com/watch?v=IdUrudecH2Y 20101004 update: Moved vertical bearings and added more strengthening