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Extruder Knob - Creality Ender 3 Pro

by regularlabs Apr 6, 2019
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Can I print it with 20% infill? Do you think it will be strong enough?

I recommend 50% or more.

Printed with 20% 0.3mm. Looks very strong (step motors are not very difficult to turn). But the hole has 0.4mm smaller diameter than necessary. I will print with 109% scale.

Printing at 98% work out perfect ! It is a great fit !

I will try what you suggested thank you !

Also when printing test prints: use your least favourite filament color :D

printed this and its to big for the ender 3 pro with the official creality 3d all metal mk-8 extruder feed drive from amazon

Printed at 100%, also confirming, it is a loose fit, 98% might be perfect.

With objects like this, the tightness/looseness depends a lot on the filament and the settings used to print it (temperature, thickness, infill). These things influence how much the filament flows. So yes, for some there can be a better fit at 98%. For some at 102%.
But that's the beauty of 3D printing... print at any size you want :)

Comments deleted.

I have only tested this on the original Ender 3 Pro with whatever extruder comes with it.
You might want to print it at like 98% if it is too large for your extruder.

A tip is to move the object under the base so far that only a small bit gets printed (so a minus z position). Enough to test if it fits ok. This way you don't have to print the whole thing to see if it fits.