A circle is drawn to begin making object in inventor

I have drawn in a diamond shape aswell on the cirlce and extruding both

showing the xz plane

slicing the object on the xy plane 

The revolution of the rectangle to create a cylinder 

placing holes in the sides consectric to the cirlces drawn

A larger hole drawn in the middle of the object

Imported into rhino to be scaled down to the right size. must fit within 50 x 50

Four cirlces drawn adjacent to one another

The four circles have been extruded symmetrically

Arrow on circle being dragged to anlge the edge out from the xy plane

drawing in a rectangle from the centre 

Thwn revolution to create cylinder

placing a hole in the extruded cirlce. hole doing a distance in not all trough 

filleting to smooth out the adjacent edges

scaling down in rhino

view of the object to be 3D printed