Integrated Cupcake Z-Rod

thingiverse

A spinoff of the Wobble Arrester by twotimes can be found here: http://www.thingiverse.com/thing:2151. The creator loved the idea but faced difficulties with offset linear guides that caused blobby sections and misaligned bushings. To resolve this, they decided to place Z-rods in the middle of the Z-stage between drive screws for reduced binding and better crash protection. They also added standard makerbot rod mounting scheme with through holes and external covers. DXF files are available as templates for modifying your top, middle, and Z-stage parts. The bearing retainer comes in three types: 3/8" through hole with insert, 1/4" through hole without, and 3/8" without counterbore for printing. A corrected Z-stage DXF has been uploaded to fix an error in the previous version. To implement this modification, alter your existing parts or cut new ones, make bearing mounts from delrin or aluminum, create rod retaining covers, print Z-floats from the Wobble Arrester, install and lubricate, then get back to work!