STL Volume Weight Calculator In two lines: Vital stats for 3D printing objects. Quickly estimate the cost of printing your 3D object!What is STL ? .STL is a file format that is popularly used for representing 3D object information for 3D printing applications. So what ? It is useful to know the volume and hence the weight of the material that may go into making an object on a 3D printer before one prints it. This may aid calculating the cost...