Thank you for your advice.
Indeed, clearance holes are not an option for my design so I’ll exclude them and leave my object solid.
There is maybe an option for clearance holes but I don’t know if it will suffice.
At the hinges there is a clearance of 0.5 mm. I can connect this clearance with
the hollow inside of the model. At the other side there are holes with a diameter of 5.3 mm that also can be connected with the hollow inside. The connections are straight, so no ducts. This is much smaller then your recommended size of clearance holes so I think I already know your advice
Also, I think it isn’t worth the trouble nor the price difference between hollow and solid (I’ll have to check)…