The stock Creality extruder side v-slot wheel eccentric is an eccentric only on one side and just a regular spacer on the other. This not only means the wheel move in a cone shape instead of just in/out, it also means the two outside wheels ALSO slightly move in a cone shape. So you end up with the wheels riding slightly cocked to one side in the extrusion.
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| Stock setup. |
So I drilled out plate with a 9/32" drill bit and added a second eccentric in place of the spacer. If you don't use a drill press or mill, a step drill bit should do a good job of keeping it centered. I marked the spacers with one divot on the short side and two divots on the long side, so I can easily see which direction they're facing. I now need to manually keep the two eccentrics synced up, but that's not really a problem, and it's much better than stock setup. The adjustment is much more predictable now, and I can get all the play out with the wheels still relatively loose.
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| Dual marked eccentrics. |
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