Yoyo CAD & Prototyping Adventures

[hello]

My design is done!

here are the specs:
56.0267009554mm diameter

53.00826 mm width

66.4347714427g

Bimetal

6061 aluminum

400 series stainless steel

[redzaku (Stephen)]

congrats! keep it up

[MarkD (Mk1 Yoyos)]

This looks lovely, nice work!

My only recommendation is to add a flat stop here (red squares) so that the “caps” can be pressed in fully to the set depth. Otherwise you’d likely have a pretty variable gap width after assembly.

[hello]

do you like it?

[MarkD (Mk1 Yoyos)]

The steel ring needs two flat sections to hold it on, one completely horizontal to hold the press fit, and one completely vertical to act as a stop when it’s pressed on.

Make sure all the parts have at least a minimum thickness for machinability as well - for aluminum alloys you’d typically have 1.0 mm to 1.6mm.

[hello]

thank you!

[AtomicChessGuy]

Like this:

[redativity (Red)]

That makes sense. How thin do you think the plastic part can be made?

[hello]

fixed it

[hello]

what cad do you use?

[AtomicChessGuy]

I use Onshape. Make sure to add fillets to all those sharp corners so they wouldn’t cut someone. Also make sure everything is fully constrained. You shouldn’t be able to click on a point and drag it around. It should look like this:

[Captrogers (Brandon Rogers)]

Or make a finger laceration throw. Always an option I guess

[Lex]

I would suggest you watch the videos AtomicChessGuy sent you earlier. You’ll save a bunch of time rather than tweaking the design, asking for feedback and getting told the fundamentals again from these videos.

@AtomicChessGuy

I recommend watching this series:

or this series:

Onshape is a good tool to use to design yo-yos. It is what I use. I use fusion 360 to render them.

[AtomicChessGuy]

Specs:
Width: 48mm
Diameter: 56mm
Half Weight: 30.014gms
Assembled Weight: 62.929gms
MMOI: 14776
Axle: M4 x 8mm x 0.7
Bearing: Size C

Thoughts/Criticism?

[FrankDeath]

If the string gets caught in one of the grooves, the yo-yo stops spinning, right?

[AtomicChessGuy]

I’m actually not sure. I think what would happen is that the string would land in a groove and begin to tilt the yoyo off axis but I don’t know anything for certain. Might be a fun yoyo to play with or it might be completely terrible.

[FrankDeath]

It looks cool, but I would wait for reviews before buying one like it

[Prion_yoyos]

moreover, those grooves would be difficult to machine

[FrankDeath]

It might be ok with Dynames-like grooves.

[AtomicChessGuy]

What are Dynames-like grooves? I know the Dynames yoyo but it doesn’t have large grooves taken out of it does it?