Yoyo CAD & Prototyping Adventures

I modeled a Yomega Brain, the first yoyo that I saved up my own money to purchase.

The actual yoyo I have is ~67 grams, very hefty. It’s one of the glow-in-the-dark models from over 20 years ago.

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So cool.

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This week I took my first shot at using FreeCAD, as I had a yoyo design burned in my head from my responsive 0A obsession the past month.

This was at the end of my first night…

And this is how it’s going!

I’m a musician first and foremost, so I wanted to imbue that into my first design. This takes its cues from my record player! I call it the Disc Jockey.

Thanks to @MarkD for the YouTube tutorials and the suggestions!

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That’s a great design for that name!

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An old design I found from the vaults. Getting back to yoyo and designing, having tons of fun.

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Hmmm, i may give this a shot. Im a design engineer by profession and use Solid Edge 2021 every day. I used NX for 10 years before switching to SE.

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https://www.instagram.com/tv/CdJL7rqAMxg/?igshid=MDJmNzVkMjY=

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I’m thinking of protoing a full size wide boi out of steel, looks like this:

The walls are mostly like, .7mm.
I don’t really know how thin I can go, but .7 seems ok.
At least at the prototyping stage it will become clear :smiley:

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That looks epic

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3D CNC Titanium printing. Ive seen this done in cycling. Probably do a Yo-Yo, technology these days

https://www.instagram.com/tv/Cd6F39bgfZ1/?igshid=YmMyMTA2M2Y=

Metal 3D printing has always interested me. It might not be the end all, but making a blank and just machining the surface might be the go to with them.

That surely looks really precise, gotta look at the prices on that tech.

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im really new to the yoyoing scene (1 month new) and would like to learn to model and make yoyo, but where do i start

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This thread should get you started.

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So I’ve done some modeling for a yoyo and I’ve finished! Here are some picture

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Oh man! This is pretty awesome! I would absolutely love to pick on up whenever you decide to put them on sale. I’d give a crack at installing a modern bearing seat into it and maybe give the yoyo a powder coated finish. The bearing seat design you implemented potentially could have been revolutionary for the time. I don’t think the modern bearing seat design came out until the mid 2000s, @yyfben2 would know the answer to this.

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Oddly the first bearing yoyo had a similar bearing setup with oversized inner race.

CAD/Visualization tooling updates!

I found an interesting Blender plugin called Sverchok nodes, which allows direct interaction with FreeCAD files from within a node tree view in Blender.

Sverchok: Welcome to Sverchok’s documentation! — Sverchok 1, 2, 0 documentation
Blender: https://www.blender.org/
FreeCAD: https://www.freecad.org/

The setup for it is a bit wacky at the moment (requires a specific version of Blender, 3.2.0, and running some command line stuff on your computer to pull the correct FreeCAD binaries/library files into a directory for Sverchok to use) but the results are making my workflow simpler.

Previously, I had to export DXF (2d) drawing files from FreeCAD, import them into Blender, then add a Screw modifier to “revolve” it into a solid. This workflow was repeated for ANY change.

Now, after linking together the node tree, if I change something in FreeCAD, I only need to press the UPDATE button on the ReadFCStd node and it brings in the changes.


Example node tree with 4 objects (Shell, Cap, Bearing, Hub), the steps used are:

  • File Path → For selecting the specific FreeCAD file
  • Read FCStd → Reads a part out of the FreeCAD file (one per part, in my case)
  • Solid to Mesh → Converts the “Solid” output of the previous node into a triangle mesh, I am currently using the Standard mode and adjusted the parameters to make the result pretty high fidelity.
  • Mesh Viewer → Outputs the Mesh into Blender’s scene, where I can apply regular Blender features like materials
  • Matrix In → I am using this to scale all the parts to 1% of the original size, since there’s a scale mismatch between the default units in blender and FreeCAD.

The initial setup is a bit of a pain but it’s worth it, I think!

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Here’s one of my private projects for my dream yoyo that will probably not be produced, the M-ACRO-SS.

Took some key designs from my old throws back in 2015 plus the latest yyr models.

(rebellion acro for profile, dome cup from yyr ae models)

Its a bi-metal construction that has a titanium rims and 7068AL

Specs are:
Diameter: 55mm
Width: 48mm
Gap: 4.9mm
Weight: 64grams

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