Skull Fidget Spinner

by MrWai, published

Skull Fidget Spinner by MrWai Nov 30, 2016
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Skull Fidget Spinner by MrWai is licensed under the Creative Commons - Attribution license.

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Skull Fidget Hand Spinner Toy


Fidget Hand Spinner with Skulls that are made of BrassFill Filament for extra weight and nice shiny finish. (you can print them with any filament it doesn't matter, The weight is mainly from the two nuts in the body)

Extra things you'll need:

The body uses two M8 Hex nuts (13mm) or (1/5 inch) in the US that you can buy from any hardware store or Home depot or from the following links:

And one Skateboard bearing, I won't leave a link for this because you can find it anywhere plus there are different kinds of it. there are cheap ones and expensive ones, ceramic and steel.. etc

Carbon fiber used to cover the bearing caps (if you want to use ones):


Look in print settings part to see the settings I printed mine with.

Note: The Skull design is a modified version from the original design of Wolfiest you can find here:

Object Specifications:

  • Total length: 8.5 cm
  • Total width: 3 cm
  • Body height without the skulls: 7.6 mm
  • Body height with skulls: 12 mm


I can't wait to see what filaments you guys are going to make this design with! Don't forget to upload a picture of what you'll make :)

Print Settings

Printer Brand:





Doesn't Matter




0.2 mm layer height for both the body and the skulls. And 2 shells is enough for walls.


Anything between 20% to 50% or more if you like is fine for the body and 100% infill for the skulls


When printing the skulls make sure to make the first layer a bit higher to get smooth and shiny first layer and to get better adhesion.



  • After printing the body, put the bearing in its place. You can use a bench vise to press it in place or hammer it gently until its inside.

  • Put the nuts in place in the same way. (Make sure you use the same type of nuts in the two sides or the weight won't be balanced!).

  • Put the 4 skulls in their places (2 on each side) by inserting them into the holes on the body to hold in place (you can use a vise to press them tightly).

  • Add the bearing caps on both sides of the bearings for better grip.


See images below for steps (sorry for bad pictures my other phone is broken)


Press bearing and nuts in place

Clip the skulls in place

Put the bearing caps in place

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does anyone know the bearing size? 8's or 9's

May 29, 2017 - Modified May 29, 2017

Good job budd hope you appreciate the tip ....now frig off and make some moor sweet ass "skull" things for us to print out

Thank you so much buddy, your tip is much appreciated :) don't worry I have a lot of plans to do I'm just really busy with exams this month.. I'll start uploading designs in july and I'll make sure to inform you :)

Take your time exams are more important than making sweet ass skulls

Is there any way you can remix this one with 3 skulls instead of just 2.

that wouldnt be easy but i bet he could

Awesome design!! This spinner totally rocks!

Jan 8, 2017 - Modified Jan 8, 2017

printed this with 100% fill and 200µ using ABS. excellent fit. just the caps about 1mm smaller. maybe i used the wrong stl, but nothing super glue can't fix. thanks both of you for the beautiful designs.

Hey synth0r!
I'm glad to know you printed it. I would love it if you share with us how your final result looks :)

Jan 8, 2017 - Modified Jan 10, 2017
synth0r - in reply to MrWai

you can view it here:
i used black for the main color and white for the skull.
after fidgeting it for a while, i feel that it would be more comfortable if the caps are thicker and curved in to better fit the thumb and index finger. all in all, it's a good design. feels solid in the hand. maybe you could try modifying it with 3 thingy (dont know what to call the skulls part) next.

the skulls are broken can you fix those please they show up black and after slicing only the three posts are sticking up no skull

Like what you've done, thanks for the mention. ;)

No, thank you for the awesome design!
And I already was planning to mention your credits but I realized that I haven't so I did this morning. :)

Since this includes both your works...

Comments deleted.