Fidget Spinner Gyroscope 12 1/2" inch balls
Description
75 Mm Dia Circular Spinner With Twelve Holes At The Rim For 1/2" Chrome Steel Ball Bearings (Slingshot Ammo). Standard 608 Skate Bearing (8X22X7Mm). Scale As Necessary For A Tight Press Fit For The Balls. Adhesive Will Throw Off The Balance. (Just A Thought: You Might Even Try 50 Caliber Lead Balls Used By Muzzleloaders.) Scale Bearing_Button_V1.Stl To 99% So You Don'T Have To Press Fit It. It'S Tough To Remove The Grips From The Bearing Printed Full Size. Try Printing With Three Perimeters, A 20% Hex Infill, And Zero Top And Bottom Layers. This Will Expose The Hex Infill (As In The Photo), Which You Use A Soda Straw To Blow Against To Accelerate The Spin. **Human Power Only! Do Not Use An Air Compressor!** Ask Your Science Teacher About Centrifugal Force. Using A Kerosene-Lubed Yellow Jacket Ceramic Bearing, And With All Twelve 1/2" Balls Installed, I Got A Five And A Half Minute Spin. This Thing Was Made With Tinkercad. Edit It Online Https://Www.Tinkercad.Com/Things/Kojbee1Pfjq
Statistics
Likes
3
Downloads
0