Universal printer vibration dampener remix

A 3D printer dampener to use with a practice PU golf ball (41 mm diameter).

This is a remix of http://www.thingiverse.com/thing:1992030, 25% faster to print and with 33% less matter.

My goal was to make a remix of Trobinou's dampener (which is also a remix), but with less matter and a shorter time to print (and with three screw holes for a stronger assembling).
On my printer:
- original file needed (according to Cura) 5.88 m, 79 mn and 18g PLA (17% infill, 0.2 mm layer thickness, no