Extrusion wire retainer
thingiverse
This is a small collection of wire/cable retainers that fit in the standard aluminum extrusion on Creality and other 3D printers. I've made 2 that fit inside the extrusion channel, and one with a flat base that can be bolted to it. You can change the length of the piece by editing the Z dimension in your slicer. This should print without supports in the correct orientation. (As shown in the sample pics.)
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