THERE ARE 2 DIFFERENT SIZE SPINNERS THAT WORK ON MULTIPLE 3D PRINTERS. THE CAPS ALLOW FOR MORE SURFACE AREA AND MORE FINGERS TO BE USED FOR BALANCE. THE MORE THESE ARE USED THE FASTER THEY WILL SPIN DUE TO WEARING IN. ONE SPINNER USES NUTS THAT ARE 7/16-14 THAT CAN BE FOUND AT MOST HARDWARE STORES. THE OTHER USES 3/8-16 NUTS IN WHICH ARE MORE COMMONLY FOUND ANYWHERE BUT IS A SMALLER SPINNER. EITHER SIZE WILL SPIN WITHOUT THE NUTS INSERTED.

THIS SPINNER REQUIRES NO BEARINGS AND CAN BE MADE IN LESS THAN 1.5 HOURS ON MOST PRINTERS.

I USED BOTH A ROSTOCK MAX V3 AND A COLIDO PRINTER TO CREATE THE DESIGN.

SPINNER BODY WAS COMPLETED ON MULTIPLE 3D PRINTERS WITH THIS SETTING.
I USED A SIMPLE VISE TO PRESS STANDARD NUTS (3/8-16 AND 7/17-14) FOR WEIGHT DIFFERENTIAL IN THE SPINNER BODY.
PRINTER WITH TIGHT TOLERANCES WILL NEED TO USE A LITTLE FORCE TO BREAK THE CENTER RING FROM THE 3 "TRIANGULAR FINGERS" IN ORDER TO ALLOW IT TO SPIN FREELY

CAPS WERE COMPLETED ON ROSTOCK MAX V3 WITH 0.15MM LAYER HEIGHT AND 70% FILL. I USED SUPPORTS FOR THUMB PRINT IN CENTER. THESE PRESSED IN THE CENTER OF THE NUT WITH A VISE. THESE ARE NOT NEEDED, BUT ARE A NICE ADD ON FEATURE.