Rolling Knife Sharpener with inbuilt planetary gearbox with Mechanical Advantage of 1:3 (HORL compatible)

Important: This part is published under the Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) licence! Non-commercial use only! Remixes must be published under this licence as well!

Go to https://www.horl.com/ for grinding discs and reference to the original. I am not afiliated with HORL in any way.

Full CAD-Files: See attached .step file.

Printed in PLA with a 0.2mm Nozzle.

This project is work in progress. Currently known issues:

• The space for the outer planet gear holder bearing is too large, so the rolling disk wobbles a bit axially after assembly
• I work on a version that works with 0.4 mm nozzle, though this is difficult, and the result will be worse
• I work on a version, where the two sides are not connected for better curved knife grinding

I will update this when I find the time to work on those issues.
With 0.2 mm Nozzle, the currently uploaded version works very well, though.

Assembly Guide

In this document, you can find a description about the assembly process and needed tools, parts and settings of your printer:
https://drive.google.com/file/d/1ADHG-sUP8cmbcfGfjGgHIIo4i02iNEqt/view?usp=sharing

Needed Materials

Bearings

3x
15mm × 24mm × 5mm
Link:
https://www.amazon.de/gp/product/B07KFSMR6X/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 or similar

2x
35 mm x 47 mm x 7 mm
Link: https://www.amazon.de/gp/product/B08LK7H7JJ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 or similar

1x
35mm x 42mm x 7mm
Link: Original Link Expired, alternative: https://www.123kugellager.de/lagern-6806-2RS?gclid=CjwKCAjw7vuUBhBUEiwAEdu2pMMBQ75UwnJxFekbPx3aBs_2ggvOOHqqxFkcMtEHTygKeXOmEhmhChoCzWsQAvD_BwE

12x
3mm x 10mm x 4 mm
Link:
https://www.amazon.de/gp/product/B07CWLGNJ5/ref=ppx_yo_dt_b_asin_title_o06_s01?ie=UTF8&psc=1

Screws and Threaded inserts

Screws:

8x M2x8
1x M4x14
3x M3x8

Threaded Inserts (Ruthex):

2x M6
1x M4
3x M3S (Short Version)
2x M2

see https://www.thingiverse.com/thing:4682424

For further details, please take a look at the assembly guide.

MISC

2x G3/8" flat seals, e.g. https://www.amazon.de/gp/product/B08TZZGPVZ/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

2x 50x4 mm O-Rings:
https://www.amazon.de/gp/product/B00N3UZ0SG/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

6x 3x20 mm steel pins:
https://www.amazon.de/gp/product/B07YKND8QW/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&th=1

This Thing on printables.com: https://www.printables.com/de/model/212006-rolling-knife-sharpener-with-inbuilt-planetary-gea
I would love to get Feedback if anyone attempts to remake this Thing!