This simple 3D printed product has generated over a million dollars in sales world wide in the last two years, (we sold over 50,000 units in 17 country's)! I show you how to use Tinker CAD to design, and then refine a 3D printable product that consumers will love! This product helped to finance my massive 3D printing farm here in Branson Missouri, that now produces over 70 different products that we sell in countries around the world!