Hi there,
This is Bogdan from Romania.
I'm a mechanical engineer - specialized in the industrial robotic field, 3D designer, industrial designer and, 3D modeler.
For some of my projects, I'm also doing the physical prototype too.
I'm doing product design, industrial design, reverse engineering, ideation, etc.
I have over 15 years of experience working on various systems/devices across multiple industries, from concept to launch.
1 - in the first place will need to know what kind of 3d printer you will use (fdm, sla, sls requires different tolerances and you have something quite unusual - 53.79mm diameter for the holes...)
2 - it looks like the pieces will be assembled with screws, but for a better look is advisable to have countersunk screws - in which case will need to have the proper chamfer, or use socket head screws...
3 - It will be difficult to 3d print straight corners in the inside - it is advisable to have a filet radius or a chamfer...
For any more questions, we could chat here, including the whole details of the project, final price, time frame, deliverables, etc, etc...
Regards
Bogdan