Solids Of Constant Width - Variety of 4 shapes Phone Stand The 2 that I use

The 2 that I use are shown in the pictures

The fixture plate

The slotted mounting allows for 12

All kits now ship with universal cross pins that fit both 6

3/8 - 16  Screw with Grease fitting (New protective style)

Solids Of Constant Width - Variety of 4 shapes Phone Stand The 2 that I useSet of four Cones of constant width with one of each Triangle, Hexagon and a Heptagon and Sphere. CNC machined in Canada out of brass or aluminum bar stock. Approximately 1" in diameter. These non spherical solids amazingly have constant width in every directionallowing them to roll smoothly. They are derived from two dimensional curves that were put into use by the 19th century German engineer Franz Reuleaux.