Quad Fidget Spinner

I tried to make the model with a durable, stable and, above all, soft edge. First test models had sharp edges and were uncomfortable to use.

Required part: 608ZZ bearings or any 608 bearing
Bearing dimensions: 8 * 22 * 7mm
Dimensions of the spinner: I designed the bearing location to be 21.8 mm. This will hold the bearings properly, but will not break them.
Dimensions of the knob: I designed the knob pin to 8.25 mm. 

Bearing preparation

The bearings I bought needed preparation because they didn’t really spin from the grease.

1. Check that the selected bearing rotates, is not clogged, broken bearing balls, etc.
2. Soak in alcohol such as isopropyl. for a few hours.
3. Remove from alcohol, clean or blow out with a high pressure compressor.
4. Pour a little instrument oil on it, turn it a few times and wipe it off.

Assembly

1. Of course, print out the modell. = D
2. I used a press to insert the bearings, but it can also be used with a rubber hammer, a smooth, strong flat table, or a vise.

Comment

• I made it from PLA, but there was a pla that broke several times with the same settings as the others. It happened with one of the 6 types of pla.
• I tested the model with a high pressure compressor and several random drops, and it worked properly.
• With this type of bearing, I was able to achieve 45-80 seconds of rotation, depending on wear.
• The Prusa Galaxy Black and Azure Blue look really good together.

Print Settings

• Material: Several type Pla
• Nozzle: 0.4mm
• Layerheight: 0.2mm
• Supports:  Spinner: None / Knob: Build plate only
• Infill type: Grid
• Infill: 30%

Color Changer - Z layer height 

1. Black:       0 .00- 0.80
2. Blue:       0.80 - 1.40
3. Black:       1.40 - 5.80
4. Blue:       5.80 - 6.40
5. Black:       6.40 - 7.00