CR-10s X Stepper Bearing Support

thingiverse

I recently installed Cornely_Cool's awesome belt tensioners on my CR-10s (https://www.thingiverse.com/thing:2869114 and https://www.thingiverse.com/thing:2854971). After installing them and increasing belt tightness a little, I started worrying about stepper shaft flex, particularly when the teeth are coming onto or off of the pulley or idler. Seeing some good results with this modification on a Prusa i3 MK3's extruder stepper led me to try it on my CR-10s X and Y axes. This custom-made X axis cover offers several benefits: 1. The two-piece design provides additional rigidity and ease in printing, along with separation between the belt/pulley and switch wires. I was concerned about the possibility of wires getting caught up in the pulley/belt, but this setup eliminates that risk. 2. The MR95ZZ bearing is press-fit into the bottom cover, requiring slight adjustments to get it just right. You may need to tweak your 3D printing settings or adjust the Fusion 360 sketch defining this detail at 9.1mm if you're confident in your flow control. 3. To accommodate the filament sensor, I had to flip it over and realign it with the hotend assembly correctly. Two small slots were added to provide options for routing cables, rather than exposing the internal components. You can find its Y axis counterparts at: * For those who prefer a single part that supports the stepper and shaft: https://www.thingiverse.com/thing:3142885 * For those with an existing Y stepper brace they'd like to keep: https://www.thingiverse.com/thing:3141177