# Yoyo CAD & Prototyping Adventures **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [August 7, 2018, 3:40pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547 "2018-08-07T15:40:59Z")\ **Posts on this page:** 20\ **Page:** 76
**Author:** ![Prion\_yoyos](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/prion_yoyos/32/190184_2.png) [@Prion\_yoyos](https://forums.yoyoexpert.com/u/Prion_yoyos)\ **Post date:** [May 22, 2024, 6:00pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1531 "2024-05-22T18:00:07Z")
not a yoyo in the traditional sense, but i made this lineart for my grad medal ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/b/1/7/b17184d7eadd86b255e881db9fe6994beb3bc9ea.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/4/1/8/41871eaecf22c893c35e12a888f4d5ad5a06f736.jpeg) ---
**Author:** ![rizurizu44](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/rizurizu44/32/706777_2.png) [@rizurizu44](https://forums.yoyoexpert.com/u/rizurizu44)\ **Post date:** [May 24, 2024, 3:54am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1532 "2024-05-24T03:54:51Z")
prototype run. hope it go well. can’t wait! ![86cc645589761efd8a581badf4a5e0ac](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/1/8/0/1800b4630c336f976d260f15df16b01b1ae31464.jpeg) ---
**Author:** ![hsb](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hsb/32/193274_2.png) [@hsb](https://forums.yoyoexpert.com/u/hsb)\ **Post date:** [May 24, 2024, 5:23am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1533 "2024-05-24T05:23:43Z")
This is Monophobia? ---
**Author:** ![rizurizu44](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/rizurizu44/32/706777_2.png) [@rizurizu44](https://forums.yoyoexpert.com/u/rizurizu44)\ **Post date:** [May 24, 2024, 5:38am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1534 "2024-05-24T05:38:32Z")
yes! monophobia is on prototype stage! ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [May 24, 2024, 6:17am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1535 "2024-05-24T06:17:52Z")
Jealous. I don’t have the money for a prototype. Congrats! ---
**Author:** ![rizurizu44](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/rizurizu44/32/706777_2.png) [@rizurizu44](https://forums.yoyoexpert.com/u/rizurizu44)\ **Post date:** [May 24, 2024, 7:03am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1536 "2024-05-24T07:03:49Z")
there’s bunch of manufactures who can do prototype. you can search and contact them one by one, compare and choose who is best to you. ---
**Author:** ![rizurizu44](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/rizurizu44/32/706777_2.png) [@rizurizu44](https://forums.yoyoexpert.com/u/rizurizu44)\ **Post date:** [May 24, 2024, 10:39am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1537 "2024-05-24T10:39:43Z")
another update before shipped to my place and do some quality check. ![ab4144b843f0755e2e76060a910183ce](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/5/0/9/5092af8bba18ec8634a2a1a54b56ee51086481b9.jpeg) ![5191f5894dcaaa3b1944e6a35906e190](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/b/2/6/b26a201c3549dc036cb42d9d149e93d8c9503e94.jpeg) ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [May 24, 2024, 10:46am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1538 "2024-05-24T10:46:31Z")
To my knowledge all the manufacturers are $500~ and up and I don’t have that kind of money. Max I could spend might be around $100. ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [May 25, 2024, 12:38pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1539 "2024-05-25T12:38:54Z")
> [@Community CAD Yoyo - First Design Made!](https://forums.yoyoexpert.com/t/community-cad-yoyo/401780): > > I thought it would be an interesting idea to have the community vote on different aspects of a yoyo and then for me to make that yoyo in CAD. I will let these polls exist for 3 weeks ~ a month, before making more specific polls for the options selected, then I will make the yo-yo. Kind: [poll](https://forums.yoyoexpert.com/t/community-cad-yoyo-first-design-made/401780/1) Material: [poll](https://forums.yoyoexpert.com/t/community-cad-yoyo-first-design-made/401780/1) Width: [poll](https://forums.yoyoexpert.com/t/community-cad-yoyo-first-design-made/401780/1) Diameter: [poll](https://forums.yoyoexpert.com/t/community-cad-yoyo-first-design-made/401780/1) Shape: [poll](https://forums.yoyoexpert.com/t/community-cad-yoyo-first-design-made/401780/1) Color: [poll](https://forums.yoyoexpert.com/t/community-cad-yoyo-first-design-made/401780/1) ---
**Author:** ![eatpotaro](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/eatpotaro/32/275790_2.png) [@eatpotaro](https://forums.yoyoexpert.com/u/eatpotaro)\ **Post date:** [May 30, 2024, 11:53am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1540 "2024-05-30T11:53:49Z")
wanted to try my hand at drawing a yoyo. Its pretty much just designed for what I think looks cool, so i dont know if this would even be a playable yoyo lmao ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/5/5/e/55e4adafa667813a004cc752a2673819937a2730.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/6/b/6/6b6e5a6a69d93bbee2d9b0491076c89dfb9d235b.jpeg) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/2/d/6/2d620f9876b8e787ba116c24ae22610e95c2ce59.jpeg) diameter: 56mm width: 47mm half mass: 33g material is 7075 aluminium ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [May 30, 2024, 9:57pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1542 "2024-05-30T21:57:44Z")
If one half is 33 grams then the yo-yo will be around 68.1 gms (33+33+2.9). If this is what you want this is fine. What software are you using? Is there a way to calculate the MMOI? A lot of those edges look very sharp. You might want to add fillets to them if possible. Overall looks pretty good! ---
**Author:** ![eatpotaro](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/eatpotaro/32/275790_2.png) [@eatpotaro](https://forums.yoyoexpert.com/u/eatpotaro)\ **Post date:** [May 31, 2024, 10:19am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1543 "2024-05-31T10:19:19Z")
thanks! im using solidworks, i should add fillets i didnt realise the bearing and axel would be so heavy, i thought they weight about 0.5-1 gram max lmao, will change that as well the im not sure the value of the MMOI but using (Y position of centroid / total half height) \* 100 i got 60% ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [May 31, 2024, 1:20pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1544 "2024-05-31T13:20:23Z")
![IMG_1132](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/9/7/5/9751996641e99a844483434ab50435ea169a6389.png) ![IMG_1133](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/e/d/3/ed348626df5882dd8f0f7fd89f1ca1a06b20cbbd.jpeg) ![IMG_1134](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/d/d/c/ddcfdb69bea8861f01064c15b44adf377b2c72a2.jpeg) Specs: Width: 45mm Diameter: 50.9mm Half Weight: 30.9gms MMOI: 15180 Body: 7075 Aluminum Rims: 303 Stainless Steel This was an experiment with a lower diameter yo-yo with more steel on the rims. Was a lot harder to balance the steel’s weight than I thought it would be, and the MMOI turned out lower than I wanted, but I will make a better design on this concept later. ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [May 31, 2024, 1:40pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1545 "2024-05-31T13:40:32Z")
> [@AtomicChessGuy](#): > > This was an experiment with a lower diameter yo-yo with more steel on the rims. Was a lot harder to balance the steel’s weight than I thought it would be, and the MMOI turned out lower than I wanted, but I will make a better design on this concept later. There’s a bimetal 50mm diameter yoyo I did the CAD work for that has an MMOI of 13,318 and a total mass of about 61g. It’s very highly regarded. It’s also D-bearing - but you really have to temper your expectations for what the MMOI can be for smaller yoyos. Diameter is the most important factor for that. ---
**Author:** ![Lex](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/lex/32/1599_2.png) [@Lex](https://forums.yoyoexpert.com/u/Lex)\ **Post date:** [May 31, 2024, 1:53pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1546 "2024-05-31T13:53:52Z")
It doesn’t look like there’s much contact between the aluminium body and the steel weight rings there, and the rings themselves protrude quite a lot. I would think that the lack of contact would result in quite a fragile throw where the rims could easily dislodge. That plus the large protrusion of the rims past the body I think could likely result in vibe or at least a lot of half swapping to tune it if it were actually manufactured. Someone more experienced in yo-yo design can correct me if I’m wrong though. ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [May 31, 2024, 10:02pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1547 "2024-05-31T22:02:47Z")
I wonder if the Will, Klondike, Papercut and other yo-yos like that have problems with vibe and half swapping. > **[Will](https://shop.yoyoexpert.com/products/will-yoyo-by-yoyofactory)** > >   From YoYoFactory: The Will is a bold new Japanese influenced design from YoYoFactory in honor of Japanese National Champion Akitoshi Tokubuchi! Machined from 7075 grade aluminum with Stainless rims everything about the WILL is about... > **[Klondike](https://shop.yoyoexpert.com/products/klondike-return-top-by-clyw?variant=44020009042110)** > > The new Klondike by CLYW is a stunning example of what can happen when two passionate forces in the world of yoyo come together! Japanese focused competition design meets Canadian return top aesthetics for a beautiful new throw that we seriously... I also don’t really know what the minimum amount of contact area for a press fit is. ---
**Author:** ![Lex](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/lex/32/1599_2.png) [@Lex](https://forums.yoyoexpert.com/u/Lex)\ **Post date:** [May 31, 2024, 10:55pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1548 "2024-05-31T22:55:50Z")
Yeah I’m not sure what a good rule of thumb would be for minimum contact area. I know Brandon Vu has talked about needing to do half swapping for the Outlier 3 to tune for vibe: [https://youtu.be/0tAyzlmu\_SM?t=189](https://youtu.be/0tAyzlmu_SM?t=189) Just looking at my Klondike/Toru 0.999 (both of which have noticably protruding outer weight rings), I’d say about 1/2 to 2/3rds of the weight ring is on the body of the yoyo. Maybe ~4mm protruding and ~5mm on the body? Though I’m just judging by eye. ---
**Author:** ![rizurizu44](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/rizurizu44/32/706777_2.png) [@rizurizu44](https://forums.yoyoexpert.com/u/rizurizu44)\ **Post date:** [June 3, 2024, 9:03am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1549 "2024-06-03T09:03:48Z")
another update for Monophobia prototype. finally delivered and do some testing for 10 pieces. the feels as i expected to be, wide but enough to handle some speed and hop combo. but unfortunately nothing came as good as a normal yoyo would be. even worse, almost all yoyos that came are wobble. the yoyo came unassembled, just body and i’ve prepared the pads, axle, bearing and assemble them by myself. among 10, only about 4 yoyos are able to spin with terrible vibe. you can play it but it feels like it has dropped from 2nd floor and got the wobble. even worse than any b grade yoyos that some big brand sell. kinda unfortunate thing that happened to me, but hope you can learn that it’s okay to spend more to manufacture that have experience with yoyo production rather than go cheap with a random manufacture. ![WhatsApp Image 2024-06-01 at 1.53.18 PM](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/0/9/5/095f5ca520cda74afbcbdb5707c44f690d081093.jpeg) ![WhatsApp Image 2024-06-01 at 1.44.04 PM](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/6/a/3/6a3979936a506079e1de5a67ad2af7e46a09f7aa.jpeg) ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [June 3, 2024, 1:40pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1550 "2024-06-03T13:40:35Z")
Awesome that you got the prototypes! Must be so cool to hold something you designed in your hands even though it doesn’t work as you hoped. On that note, unfortunate that the yoyos were not machined with enough precision to be smooth. ---
**Author:** ![Hungrymushroom](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hungrymushroom/32/259613_2.png) [@Hungrymushroom](https://forums.yoyoexpert.com/u/Hungrymushroom)\ **Post date:** [June 3, 2024, 1:53pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1551 "2024-06-03T13:53:13Z")
Have you tried swapping halves to see if you can get something smoother? [Previous page](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547.md?page=75) [Next page](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547.md?page=77)