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Small Fidget Spinner

by serspencer, published

Small Fidget Spinner by serspencer Apr 7, 2017

Design Tools

Fusion 360

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Summary

Spinner

This is a fidget spinner I made for people with smaller hands, or kids. It is also a great first spinner to help get used to the flicking motion with your fingers. The fitting of the bearings might be a hair tight, but do not worry, I assure you they fit. If anything, use some WD-40 to oil up the holes to ease popping them into place. Just remember, the easier they go in, the easier they fly out, so do not go to crazy.

Bearing Cap

Two different variations of a bearing cap have been included with the spinner. Again, they are a tight fit, but they will go in and they will come back out. The curved design allows for better grip and control at high speeds, however it is much bulkier. The flat design is a sleek, thin design, but does not offer as much grip while spinning fast.

Curved: http://www.thingiverse.com/thing:2246087/
Flat: http://www.thingiverse.com/thing:2246094

Bearing Maintenance

Use YouTube or Google to help you find the best solution for your bearings. A general rule of thumb is to put them into a degreaser, and then re-lubricate them. Check your bearing and online to see what the recommended lubricate is.

Requires:

  • 4 608 Bearing
  • Degreaser
  • WD-40 or other bearing lubricate

Additional Files:

  1. Drafix CAD File (Use With AutoCad) - Small_Curved.dfx
  2. Wavefront 3D Object File (Use With 3D Image Editor Such As Photoshop) - Small_Curved.obj

Preview

Password: serspin

Print Settings

Printer:

Afinia H800

Rafts:

Doesn't Matter

Supports:

No

Resolution:

<= 0.20


Notes:

Files are exported in inches unless denoted with a "MM" in front of the file name making it millimeters
The more durable you want the spinner the higher the infill. I set mine to full fill, however, a shell would make the spinner lighter and able to spin faster as well as save on plastic and time.

How I Designed This

Idea

This spinner is my original design but on a smaller scale. A young girl wanted one but the ones I had were just a hair to big for her to flick and use comfortably. I asked her which design she wanted, she picked the original one, and I shrunk it down to first in a smaller hand.

Software

I used Fusion360 which has its advantages and disadvantages. In this case, the whole spinner is one sketch and one extrusion with a few additional filets.

Sketch Map

First Sketch

The design is first made by the center circle. Then the triangle is dimensioned to however large the spinner should be. One outer circle is made tangent to the flat side of the triangle the holes for the outside bearings can be made. One outer hole was made and then revolved around the center to make the additional two required circles. The arc was done in a similar manner. After that, the sketch was extruded.

First Sketch

Extrusion

This is what the above sketch looked like after being extruded.

Extrusion

Filet

The tips of the triangle were fileted so that way the spinner would spin more comfortably in smaller hands.

Fileted Points

Final

Finally the arch were curved out to have a nice flush surface with the rest of the spinner.

Final View in Autodesk Fusion 360

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