A simple clip that snaps onto the vertical rods on the ROBO R1 printer and stabilizes the threaded rod from wobbling. It improved the print quality a lot for me. You may want to put some electrical tape or other material on the location of the smooth rod that the part snaps onto to give it a grippy surface to hold. EDIT 1/1/15: I uploaded another file. This clip is open on both ends so that you can use it on the beta model or put it at the bottom beneath the carriage. Filename: Z Clip R1 Custom.stl