Igus Bush Retainer for Emaker Huxley
thingiverse
On the Ender 3's X-axis idler, Igus bushes are fastened by self-tapping screws and washers on Z rods. Mine were loosening on the opposite side to the screw. To enhance stability, I used OpenSCAD to trim off the top 3mm of the X-axis idler bracket and attached it to the exterior of the igus bush. Problem solved. For replication, drill 3mm holes in the X-axis brackets for securing the screws.
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