Sometimes there is a desire to rescue the old crank... Here is a crank-operated rotating cellphone stand. Gears and bearings joined together by this distinctive design for those who love maker culture!

It will take 15 hours to print. So take an ease!
The most pieces should be print using 15% of infill. Use 50% only in Stem files.
You will need: 
2x bearings of: 20mm inside | 32mm outside | 7mm thickness;
2x bearings of: 8mm inside | 22mm outside | 7mm thickness;
9x M4 screw with 20mm;
8X Hex nut 4mm.

Small bearings will work on supports and big bearings will work on main support.

*Put some glue to fix the nuts.