Extrusion Quality - Mystery issue resolved !

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How I identified and resolved my direct drive extruder inconsistent flow and print surface artifact.
After release of this video I realized that many others have this issue. Thanks to people commenting here I was made aware of:
Prusa Issue 602 - https://github.com/prusa3d/Prusa-Firm...
Voron Issue 6 - https://github.com/VoronDesign/Voron-...

If you like my work and would like to support my efforts in making more open source 3D printing solutions, please consider a donation or becoming a Patron.

In this video I walk through my journey to find the rootcause of this common issue with direct drive extruders:
00:00 Intro
01:30 Timing ruled out
02:04 Motion System ruled out (XYZ)
04:16 Bowden prints better!
05:11 Direct Drive extruder system breakdown
06:17 Troubleshooting methodology
07:11 First issue - Impact of hobb gear wobbling
12:33 Second Issue - Impact of filament diameter inconsistencies
14:39 Experimental gear from Bondtech
15:16 Third Issue - Plastic gear from BMG may also be in cause
16:55 Back to square one, issue is somewhere else
17:36 Fourth Issue - New theory about "Filament Walk"
19:35 Showing improvement from new Bondtech gear once Filament walk has been resolved

Components used in this video:
Fysetc better machined POM gear ► https://s.click.aliexpress.com/e/_DCn...
Bearings to smoothen the Idler (MR85) ► https://s.click.aliexpress.com/e/_DC7...

PayPal Donation ► https://www.paypal.com/donate?hosted_...

You want to learn and contribute to the HevORT project?
FACEBOOK ►   / hevort  
DISCORD ►   / discord  
FORUMS ► https://forums.hevort.com/index.php

Thank you very much!
MirageC