So just a bit more background information on the project:
I'm working on a reproduction of a classic game packaging, the Infocom saucer from Starcross, 1982.
The original (30cm diameter) is made from thermo moulded plastic. I want to print it with a 3D printer, so the feel will be quite different, the design should be as close to the original as possible though.
On the picture of the original saucer you can see that all elements were pushed in from above. They get pushed out on the inside. They all sit on the curved, slanted body of the saucer, so if Project > On Surface would work, that would make this task very easy. Incidentally, if someone has an idea how to do the 4 rows of slots without having to create a design for every slot, that would save a lot of work, as there is 60 of them in total. But first things first, I need to know how to do these indentations first. They are around 3mm deep. I want to find out what's the thinnest wall strength is that I can get away with. I'm hoping for something under 2mm. That means that the indentations will push through the wall (and therefore stick out on the inside).
I'm attaching .f3d file, but note this is only a test, on which I'm practicing the techniques I will need. It has not been shelled yet (it will be eventually)
