Hi there,
This is Bogdan from Romania.
I'm a mechanical engineer - specialized in the industrial robotic field, 3D designer and modeler (from time to time and some projects I could make the functional prototype too).
I'm doing product design, industrial design, reverse engineering, ideation, etc.
I have over 15 years experience working on various systems/devices across multiple industries, from concept to launch.
1 - single knob combination lock or three? - the knob(s) will have to make the specific click when twisted? or simply rotation/indexing
2 - what model to be replicated?
3 - the lock/unlock mechanism should be designed to be functional
4 - how visible to be the button on the back of the lock? quite visible, almost invisible or stand out?...
5 - why not just push button to unlock and lock by pressing the hook?...
which is the purpose of this mechanism? illustration (3d model), prototyping - 3d printing, or manufacturing (there are several differentiation on the design, accordingly with the purpose)?
Regards
Bogda