This video goes over how to do rings in one way:
But the basics are there should generally be two planes one where the ring will be press-fit onto the aluminum and the other plane to keep it from being pressed too far. That sounds really confusing when I read through it so I highly recommend watching the video. It looks like the Marco has rings like this however:
remember the whole centre-weight problem? what if I did something like the fingerspin shutter and had a cap so that there is still material to lead to a dimple, but without the excess aluminium?
This in theory could work but you would also have the added weight of the cap. You would have to calculate(have the software do it for you) how much weight it added. Fingerspin dimples are not the end of the world. If you know what you are doing you can add one without adding too much extra centre weight.
you could not add the dimple to the design and just make the dimple integrated to the cap to make it lighter
hi everyone, here i’m introducing my yoyo design named Novaturient
Specs
diameter : 56,00mm
width : 49,50mm
material : 6061
approx weight : 65,5 - 66,0 gr
for the next ,i will print it on resin 3d for check the 1:1 scale, to see how the yoyo looks like and how proper this design (because i have a desire to make a prototype of this yoyo)
and thanks for all people in this forum ,i learn a lot about how to design a yoyo 
This looks great! Could we get a profile shot? What’s the MMOI?
thanks for the compliment @AtomicChessGuy
ASAP i will post the MMOI after finish my work😄
resin 3d print is not that accurate because resin shrinks when cured, so make sure it’s accounted for
yep i know its not that accurate ,i print it just a quick look for the design 
Hmmm this seems like the right place but the numbers seem off. Usually a half of a yoyo is in the 10,000 to 20,000 MMOI range. For a whole yoyo maybe 20,000 to 40,000. Someone who know fusion better may be able to chime in. @MarkD Is this the right place?
This looks pretty cool, where do you plan on producing it at?
ohh yeah i forgot to mention,its the MMOI of whole yoyo
im planning at FPM Manufacture,for me its affordable price to produce a prototype
That’s great!
this is my 1st yoyo design also a prototype for cf yoyo i’ll call it 135P
the profile is just straight v because it’s the most simplistic and most string tilt angle while doing horizontal, it’s also perfect to show off the material more because how simple it is so it won’t take the spotlight from the material
This is an…. ambitious design.
You should definitely figure out how to dimension it.
Also increase the edge radius. 0.25mm is very sharp. I would go with at least 1.3mm.
53gms is light but if that’s what you want that’s fine.
You’ll want to figure out the MMOI in your CAD software.
I don’t know too much about designing in carbon fiber.
I’m not sure what you mean by using a brass insert and spacers and an axle sleeve. It sound interesting but I can’t quite picture it.
A straight V shape is certainly interesting. It’s not done these days but it was back in the day I believe.
All around this an interesting design. If you can get it made it would be very cool I think. Let me know if you have any more questions. I’ll try to help.
autocad doesn’t support material assignment unfortunately, so i find the volume using massprop and calculate it manually with the density of brass and carbon fiber to get the weight, so finding the mmoi would be really hard, most i could do to describe how powerful it is is the rim dimension and weight, OD 54mm and 20grams, as for the dimension parameter it’s already done, at least for the ring that’s all i need to give to the machinist
i have an idea to roughly estimate the mmoi, you’ve made so many yoyo designs would you mind changing the material density on some of them? carbon fiber have the density of 1.4gr/cm3 just change the aluminium body, my yoyo would weight at around 65grams if it was an aluminium bodied yoyo, you’ll get a rough estimates for the mmoi i think (ignoring the weight distribution ofc)
