Leveling wheels upgrade!
I decided to upgrade my leveling bed system by replacing the springs by Creality's yellow ones. These springs are more robust and offer more stability for the hot bed. However the original leveling wheels which have the thread made of brass, were too weak and started to get wear due new springs tension.
So you can print these wheels and insert a M4 nut. I recommend if was possible to use inox nuts so this would work flawlessly and you will defenitely avoid future issues.
The wheels are 50mm diameter and you can print them in two heights of 8 and 10mm.
The M4 nut which I measured was 6.9mm between parallel faces (see attached picture), so I kept in mind that measure in the .STL file.
I will appreciate your feedback, so likes and comments are welcome.
Once you have your wheels printed, take the nut and insert it and let the top side aligned with the top of the wheel.
I suggest to add a washer just to prevent friction between the PLA and the hot bed support.