Can Cannon Projectile

A projectile I designed for my AR-15 mounted can cannon. At default size, It will require a small amount of sanding or scaling down a fraction of a mm to fit into the launch tube. This was intentional as I wanted a tight fit to make a good seal for maximum height/distance. Included are 2 variants, a solid one for use directly off the printer, and one with a hollow center so I could mount it on my lathe for easy sanding in preparation for molding in silicone and making plaster copies.