I was searching for a "big" bed leveling knob which is looking pretty and eventually has some indicator for turn direction - "up".
The one from "TechDayEveryDay" https://www.thingiverse.com/thing:3090542 has perfect dimensions. I mainly used the dimensions from its knob hole because these really fit perfectly. Strong and tight, only by pushing the knobs onto the original ones.
Added the "tire" surface, for a better look and also to show the direction in which the bed will move upwards. (I allways started with the wrong direction normaly... :D)
I hope you like the design.
You have any questions? Let me know in the comments. :)
Update 30th Dec 2018:
Some of you had problmes with the cable at the right back of the printer. So I tried to solve that. I found a quick and dirty way by using 3 zip ties. Please check the last picture in the gallery.
Update 28th Jan 2019:
As a proper solution for the "cable problem" please check out the Cable Cover from lordbbk. https://www.thingiverse.com/thing:3363489
Update 20th Feb 2019:
Link to the Fusion360 Model: https://a360.co/2TcKC7j
If someone is interested to join the Fusion360 Project, feel free to leave me a message and I'll invite you.
Created with Fusion 360.
Started only a week ago to learn it. I'd say it's fun to learn and results are motivating immediately.