Ender 3 Bed Leveler Knob Gripper (anti-slip) With Spring Tensioner 3D Printer Model

Author: @
License: CC BY
File formats: stl,gcode,f3d
Download type: zip
Size:7.5MB

The file 'Ender 3 Bed Leveler Knob Gripper (anti-slip) With Spring Tensioner 3D Printer Model' is (stl,gcode,f3d) file type, size is 7.5MB.

Summary

Original design 3611855 had problems I faced on Ender 3 Pro:

  1. Diameter was less than bed screws.
  2. Grip surface was made in unprintable way, hence a mess of strings, not clean print.
  3. slip-on_gripper cutouts were not fitting at all stock knobs. I do not want to print knobs, I wanted to reuse them.
  4. After adding nuts to hold plate screws knobs become loose as plate has to be moved higher. Spring was almost doing nothing. I do not want to buy new sprints ad stock ones are looking good.

To fix I did:

  1. Increase holes diameter to 4.2mm
  2. Redesigned to printable surface .
  3. Redesigned a bottom part for bigger cutouts for stock Ender 3 pro knobs. As editing STL is a mess I've recreated bottom part.
  4. Added a simple 8mm spring tensioner.stl

Fusion360 source files included for people to modify design to fit their needs. Uploading STL only is really bad practice.

I went a couple of iterations and tested it fits smooth in printer.
After modification bed leveling feels incredible and very digit. I will not buy springs after that, sorry retailers :)

Added photo of knob without modification and with parts installed to compare sprint tension.

G-code for 1 knob set attached,

8mm_spring_tensioner.stl 156.1KB
CE3PRO_MEGA_COMBO_gripper_plate.gcode 2.9MB
Ender_3_Bed_Leveler_Knob_Gripper_anti-slip.f3d 6.6MB
gripper_plate.stl 112.0KB
slip-on_gripper.stl 315.4KB