Dynamo - Antique Copper and Aluminum Spinning Top w/ Super Grip Stem (Ceramic)

This Dynamo is constructed with a copper (CuTe) outer ring and has a super grip (knurled and milled) aluminum spindle. It has a ceramic (Si3N4) bearing for its spin point. The top has a brushed finish and the copper will develop a patina over time. This Dynamo was crafted on a CNC lathe followed by hand finishing. The stem was knurled on a manual lathe and then milled to give you the super grip appearance. An antique finish was hand-applied to the copper ring.   While spin times vary with practice and experience, the copper and aluminum Dynamo had  15-minute spin times during performance testing. All Kemner Design tops are designed, crafted, and finished in my shop. I test all of the tops for performance before shipping them to you. The Dynamo comes with a personalized owner's card that proudly displays the name of the top, birth date, material and bearing used, serial number, and maker’s signature. Tops can have multiple functions: They can be used for stress relief, educational purpo