i need bic pen 3d model stl printing

I want to create a stl model, to print on a 3D printer. This model has to serve as a mold to make silicone Bic pens. The part that would have to be made with silicone is the transparent glass part. The STL model that I want you to make should allow me to put silicone inside, close it and let it form when the transparent glass of a Bic pen cools down, so that I can then insert the ink tip of a normal Bic pen.