The reason why most of the parts are red is because it's showing errors. There are 30 parts on one sheet there but I will have them on more than one. I can decide the size of the page and export this as pdf file. The Slicer software cuts objects in flat units compare to the thickness of selected material. To move an object I went to modify form (see in the red circle) and selected the part I wanted to move. I also lowered the second disc to even out the distance between them. Part number 15 (see in the red circle) was to thin so I lowered the top disc so the thin part wouldn't break off. Then I went to construction technique and select the radial slices so it would slices from the middle (see in the green circle). I imported the stl file and put the width and lenght to 500 mm and the height would be 350 mm. I decided to slice the sphere down so I used Slicer from Autodesk. Then I saved it as a stl file and it was ready for next step. Here you can see how it looks like after I removed the inner sphere. Then I cutted the smaller sphere from the bigger one by going to create and boundary fill (see in the red circles) to do that.

I drew a 250x250 mm rectangle on the bottom and extruded it up to 150 mm and subtract it from the spheres. I moved it in the middle inside the bigger sphere. I started by making two spheres with the radius 250 mm and 150 mm. This week I decided to make a sphere that I would slice down so I could put it in a light pulp and it would shine through.

Download slicer for fusion 360