A simple chest locker system :)
Screws holes are Ø4mm
Padlock hole is Ø5mm
Edit 30 december 2016:
V2 added for a better rotating movement once screwed in the chest (the rear part was rubing wood a little at the opening)
Supports are usefull for the part 1 only. Once printed, gently try to move the rotating part and it should move freely. If not, help it with a cutter.
Here is the result on the chest (Christmas gift :) !