Gear Bearing for Ciclop 3D Scanner

thingiverse

This is a modified version of Emmett's gear bearing found at http://www.thingiverse.com/thing:53451, designed to be used on the turntable of a Ciclop 3D scanner. The resulting bearing will measure 110mm in diameter, have an internal diameter of 70mm and stand 13mm thick. Due to its large size, cracking this gear into motion initially may require patience and creativity. To accomplish this task, two wood disks approximately 80mm in diameter are cut and then used to hold the inner race securely in a vise with vice-grips. A thin layer of double-sided foam tape is applied to the outer race for extra grip, after which some elbow grease and persuasion usually get the job done. Once you've finally got this bearing turning, immerse it entirely in water and give it several spins. As the gears continue to break-in, a fine plastic powder develops, clinging stubbornly to the gear teeth, resulting in rough spots that are not only frustrating but also a barrier to free motion. The easy fix is to submerge the bearing under running tap water, letting the powdered particles get washed away and leave you with smooth running. However, even once the bearing has become fairly well-lubricated and turns freely it's possible for your stepper motor still experience difficulty in spinning the turntable platform smoothly. You may need some creative gearing help. My open-sourced Scad script is attached to this project which contains all necessary information to fabricate a set of geared platform attachments, similar in nature to Emmetts initial design. Please visit: http://www.thingiverse.com/thing:1243069 for your assistance