Ender 3 Upper Z-Screw Bearing Blocks
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Ender 3 Upper Z-Screw Bearing Blocks for better fit -mount to Vertical extrusions instead of Horizontals
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- Creative Commons — Attribution — Noncommercial
Note - There is a support piece built-into the model where the bearing will fit.
These blocks are similar to the ones that come with Ender 3 dual-z axis kits, but are modified to allow them to be secured to the vertical aluminum extrusions instead of only the horizontal extrusion at the top.
*These are designed to fit the bearings that come with those. They can easily be removed once the two screws on the kit brackets are removed. There is a lip on one side of each bearing that must be on the outside.
This was useful for my Ender because the ones from the kit would cause the Z-screws to bind. And without any brackets, a Z-axis screw pulley does not have enough tension, and pulls the screws out of alignment.
The mounting holes may need to be adjusted slightly, depending on the straightness of your z-screws.
The Dual-Z axis screws + pulleys on each screw + 610mm belt + these brackets has dramatically increased the reliability of my Ender 3! Hopefully the same is true with yours!