Razor Disposal Bin (print upside down no support needed)

This piece is designed to be printed upside down without supports. You can see the interior design of the piece by looking at the picture I posted. The picture is a screen shot of a piece that is already upside down. 

As you can see, the bottom already has integrated supports to ensure a flush surface on the bottom. 

There are two versions; the differences between is the shape of the razor blade slot. The parabola shaped slot is for ease of use and the triangular was more for aesthetic purposes but inserting a blade into it is difficult when compared to the parabola which is very easy.