I was the guy in that vid.
Anyway, what have you already done to remove the cone burr? You can skip the allen key if you don't have one by just loosening the 2-piece shaft with your fingers and when it seems you've loosen them up completely, just pull the upper piece and it should come off. There is a rubber o-ring that holds them together even after you've reached the end of the threads. You can separate them just by gently pulling but make sure you've loosened the threads completely. Just be sure to remember where the washers originally reside as they can easily be misplaced when removing the shaft. Vice-versa, you can remove the cone burr with the allen key (i think it's 3.5mm) without seperating the 2-piece shaft. I think it's safer since you won't have the chance of losing bearings/washers with this (only the allen screw :p) And yes, you can't thoroughly clean it without removing at least the cone burr. Some people don't care, but some of us do.
Thanks for your video! I've loosened the allen key, loosened the 2-piece shaft with my fingers and pulled it off, but I haven't taken out the rubber o-ring inside. Is it a black rubber ring? Because I spotted that and it wouldn't budge. What about the bearing inside does it just slide out (mine wouldn't budge either)? As I said in my previous post, I am thinking there might have been some design changes(?) because in your video everything "falls out" (for lack of a better term) but my parts seem fastened.
Anyway, I did loosen the burr until it was sticking out and attacked it with a couple baby bottle brushes and gave everything a good wipe and it was pretty much clean enough for my liking. But since I bought it directly and I can't get in contact with Knock, I might as well fiddle with it