Sep 05, 2017 BLUE Creality 3D CR – 10 3D printer YELLOW Creality 3D CR – 10 3D printer; Unboxing the 3D printer. Let’s start the unboxing. The 3D printer was nicely packaged with very thick foam securing the frames and all the components. The printer comes in a huge box, because it is almost completely assembled. Afinibot A31 User Manual 1. As s e mb l y 2. F i ne -T u ni ng 3. L e v e l i ng t h e B u i l d P l a t e 4. L o a d i ng a nd U nl o a d i ng F i l a me nt 5. O p e r a t i o n: T h e F o u r St e p s o f 3 D P r i nt i ng 6. T r o u b l e s h o o t i ng 7. Ad d i t i o na l Re s o u r c e s. CR-10 SERIES 3D PRINTER USER MANUAL. Do not use the printer in any way other than described herein to avoid personal injury. Select Other → Creality CR-10 → Add Printer. Software Installation. Printing Connect the SD card to computer with reader.
Creality Ender 3 users please read the last update below
#ZKNOB
This two piece part replaces and adds to the acrylic stock cover on the Creality CR-10's Z-axis lead screw; It lets you manually control the hot end up and down (when steppers are disabled), which I have found to be VERY handy at times. For example when you're loading filament, stopping a failing print or first layer, you can easily lift the hot end by hand to give you more working space and a better view of the piece.
I have now also added a bigger version. This way it takes less spinning to manually up and down the hotend. Easily fluently movable with just one finger. (09-15-2018)
VIDEOS
A simple quick and dirty demonstration by me of how the knob works:
https://www.youtube.com/watch?v=yPHjmhsJESk
Your computer will most likely not be able to open this file. 
The name of the file is GTDIDF.bin5. This is not a problem; all you need to do is copy the file to the SD card.
And a more professional video by Chuck Hellebuyck on how to install the knob (and some other useful CR-10 (mini) mods) on Filament Friday: https://www.youtube.com/watch?v=qDG_C5y-psU&t=3m23s (3 minnutes and 23 seconds in).
UPDATES & HELPFUL COMMENTS.
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01/24/2019
If you want to use the ZKNOB on the Ender 3, you don't need the cover plate, as the Ender 3 has a loose lead screw. I suggest printing Ben White's stabilizer, which holds a 608 skateboard bearing and secures the top of the lead screw, so you can safely screw up and down without having to be extra cautious.
P.S. A filament guide is necessary to use the knob on the Ender 3.
FIX (02/10/2018)
Thanks to user wonkoderverstaendige I found out there was a tiny (but real) problem with the file of the big version. Basically the knob floated a mere 0.002mm above the stem, which only caused a problem when sliced in particular way, but it had definitely a weak spot. So if yours snapped at any point, this is probably why. You should have no problems with the fixed file anymore. Sorry for the inconvenience if it got you frustrated!
10/28/2017
Pemic: 'The knob works also for the Tevo Tornado. The stock cover is not necessary. To gain a little space on the upper side of the spindle, you have to pull the Z stepper axle a little it out of the coppler.'
Creality Cr 10 Mini Manual
10/28/2017
Fort_Design: 'I just wanted to let you know that this design will not fit the Anet E10. Mainly because the housing of the upper bearing on the E10 is closed on top. One would have to redesign these housings. Diameter of the spindle on Anet E10 is 8mm.'