# 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:** 49
**Author:** ![Palli](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/palli/32/105_2.png) [@Palli](https://forums.yoyoexpert.com/u/Palli)\ **Post date:** [September 6, 2020, 2:21pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/986 "2020-09-06T14:21:57Z")
Honestly didn’t mean that as a bad thing, it has enough to set itself a part and I honestly think Mark’s designs look a lot more well put together. But yes, when I say inspired I mean Organic with a schmoove and close to identical size( .2mm off) with the same style of weight distribution. ---
**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:** [September 6, 2020, 2:22pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/987 "2020-09-06T14:22:31Z")
It’s also light-weight and full sized. Definitely grail influenced, but not a clone, of course - the rims are rounder (instead of squared off), it’s a bit bigger, it’s considerably lighter, and of course the hub is based on the Diffraction, but with a fresnel-lens type configuration to the rings. If you compare the profile shape very carefully, the grail actually has a slightly flatter section leading into the string gap, whereas this yoyo uses a single uninterrupted circular arc going from the rims all the way down to where the schmoove groove begins. There are other influences of course, because one cannot help but look at every yoyo they own and consider what their favorite bits and pieces are. ---
**Author:** ![hobbygod](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobbygod/32/120997_2.png) [@hobbygod](https://forums.yoyoexpert.com/u/hobbygod)\ **Post date:** [September 6, 2020, 3:41pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/988 "2020-09-06T15:41:16Z")
You have a great design. Comparing it to the grail is super flattering IMO. ---
**Author:** ![JMecham](https://avatars.discourse-cdn.com/v4/letter/j/a8b319/32.png) [@JMecham](https://forums.yoyoexpert.com/u/JMecham)\ **Post date:** [September 10, 2020, 7:00pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/989 "2020-09-10T19:00:00Z")
Here is one of my first yoyo designs. I have access to a CNC lathe at my school so I hope to machine a yoyo at some point. I’m concerned about the weight distribution and I don’t know if there’s enough weight on the rims. I’m also not 100% sure how weight distribution translates to feeling while playing. Let me know what you guys think! Specs: Width: 48.0 mm Diameter: 53.0 mm Weight: 34.1 g Material: 7075 Aluminium ![Iteration D Slice](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/a/c/7/ac7780f4ab48ed87c5eccb50628091cf4da73343.jpeg) ---
**Author:** ![hobbygod](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobbygod/32/120997_2.png) [@hobbygod](https://forums.yoyoexpert.com/u/hobbygod)\ **Post date:** [September 10, 2020, 9:14pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/990 "2020-09-10T21:14:46Z")
Is that weight per half? Its either pretty heavy overall or ultra light overall 😀 Thats awesome that you have access to a lathe. Hit me up if you want me to draw something up for you 🙂 ---
**Author:** ![JMecham](https://avatars.discourse-cdn.com/v4/letter/j/a8b319/32.png) [@JMecham](https://forums.yoyoexpert.com/u/JMecham)\ **Post date:** [September 10, 2020, 9:54pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/991 "2020-09-10T21:54:08Z")
34.1g is weight of the whole yoyo + bearing. I haven’t got to using the lathe yet so we’ll see how that goes 🙂 ---
**Author:** ![hobbygod](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobbygod/32/120997_2.png) [@hobbygod](https://forums.yoyoexpert.com/u/hobbygod)\ **Post date:** [September 10, 2020, 10:49pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/992 "2020-09-10T22:49:06Z")
Ouch, thats light. Can always do 6061 if you want to up the weight a little bit. Also could just bring that first cut of the rim in with the 2nd cut and that’ll be your rim weight. ---
**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:** [September 10, 2020, 11:53pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/993 "2020-09-10T23:53:23Z")
You’ll want to get that weight up above 60g, and probably pick a simpler shape for your first design if you’re turning it yourself. There should usually be a considerable amount of material near the rims. Also check that outer edge-it looks uncomfortable. Anyhow, welcome to YYE! ---
**Author:** ![SpyseaRice](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/spysearice/32/82121_2.png) [@SpyseaRice](https://forums.yoyoexpert.com/u/SpyseaRice)\ **Post date:** [September 11, 2020, 12:47pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/994 "2020-09-11T12:47:16Z")
idk if anyone’s pointed it out yet, but it looks like your rim weight is the same as or less than your center weight so you might want to up that ---
**Author:** ![barco](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/barco/32/96957_2.png) [@barco](https://forums.yoyoexpert.com/u/barco)\ **Post date:** [September 11, 2020, 5:53pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/995 "2020-09-11T17:53:15Z")
Welcome to the Forums! Good to see you’re also interested in making a yo-yo. When it’s ready, there is a very unique feeling of pride and accomplishment. I don’t know, however, if you actually play. If you do, you’ll know that yo-yos have an “optimum” weight interval between 60 and 70g (60g is light, but OK - 70g is pretty heavy in my opinion). 34g is lighter than a 2A yo-yo. Let’s account bearing + axle to weight 4g. That’s 4g right in the center of your throw. There are 30g left… at a guess, I’d say 6.5g or 7g are in the inner walls (which from the drawing I’m throwing something around 4mm thick), which added to bearing + axle corresponds to 1/3 of the weight in the middle. It’s just all rough numbers and very rough calculations. I didn’t think too much about this at all, neither used a CAD. But I’d say that 1) Your yo-yo has a less than optimum weight distribution and 2) it it VERY light. You could work at the inner surface in order to change the distribution and try to make the yo-yo heavier while changing the distribution. As it was already stated, I also think the catchzone doesn’t seem too comfortable. Keep it up! Every design can use some adjustments in the beginning stages, and you’re almost there! ---
**Author:** ![JMecham](https://avatars.discourse-cdn.com/v4/letter/j/a8b319/32.png) [@JMecham](https://forums.yoyoexpert.com/u/JMecham)\ **Post date:** [September 11, 2020, 6:27pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/996 "2020-09-11T18:27:53Z")
Ah! I just realized I made a mistake in my post. The total weight of the yoyo is 64.1 g, not 34.1 g. Each half is just about 30 g. That’s my bad. 64.1g is pretty normal but I can see how my weight distribution is off. Also, I’ve been yoyoing for 4 years and have been using Fusion for about the same amount of time so I thought I’d give designing a yoyo a shot. Thanks to everyone for the feedback! ---
**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:** [September 11, 2020, 6:49pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/997 "2020-09-11T18:49:32Z")
If you haven’t watched these, or missed the part about rim weight, this video series shows a heuristic for estimating relative rim weight: [![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/d/1/2/d12aab3782a4ab938a87d7db399e10dfdc02741f.jpeg "Yoyo Design 101: Lesson 1: Introduction and "The Guts"") ](https://www.youtube.com/watch?v=7RmFeVW3wSk) The heuristic is to _extrude_ the cross-section and then find the center of mass. The height of the center of mass divided by the height of the cross section gives you a percentage which for most yoyos will be between 50% and 65%. Yours appears to be around 50%, which means it’ll be quite unstable for a yoyo of its mass and dimensions. This isn’t the final word on yoyo inertia, but it’s a quick check that you can do yourself to see where it’ll stack up. ---
**Author:** ![JMecham](https://avatars.discourse-cdn.com/v4/letter/j/a8b319/32.png) [@JMecham](https://forums.yoyoexpert.com/u/JMecham)\ **Post date:** [September 11, 2020, 7:41pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/998 "2020-09-11T19:41:47Z")
@MarkD Thanks for the suggestion! I watched that series of videos a few weeks ago but I probably should have written that part down. I’ll be sure to use that to check my designs. ---
**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:** [September 13, 2020, 8:48pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/999 "2020-09-13T20:48:14Z")
What if Side Effects were shorter? Imagine… _Small Effects_ ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/6/4/3/64325cc996f020ea67a6c9557acceaa680461dd0.png) Aggressively shortened to just barely fit a 12mm axle. A tap-through version would probably require a 10mm axle to keep it from sticking out into the cup. Had to drop the o-ring since there wasn’t space to keep enough taper contact otherwise. Also, here’s a 7068 yoyo that might use them. ![Small_Effects_2020-Sep-13_08-42-13PM-000_CustomizedView1334337556](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/6/1/3/613046a4fc1a558d0d17cb88d147eb50b74ce4f1.jpeg) (This idea owes everything to one drop, who shares so much about their designs and methodology that I can simply search for a question and find that they already answered it years ago here or on facebook) ---
**Author:** ![hobbygod](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobbygod/32/120997_2.png) [@hobbygod](https://forums.yoyoexpert.com/u/hobbygod)\ **Post date:** [September 13, 2020, 8:59pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1000 "2020-09-13T20:59:05Z")
Love the profile on this one! ---
**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:** [September 15, 2020, 2:46pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1001 "2020-09-15T14:46:09Z")
![Float_2020-Aug-29_02-01-50AM-000_CustomizedView14840710255](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/9/f/5/9f5c679365eca1275b34958f10734759660cbdc6.png) What if the Float was a bimetal? ---
**Author:** ![Throwzone](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/throwzone/32/100808_2.png) [@Throwzone](https://forums.yoyoexpert.com/u/Throwzone)\ **Post date:** [September 16, 2020, 8:15pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1002 "2020-09-16T20:15:01Z")
Just made this up today, wanted to make something not so mainstream any thoughts on it? Around 62 grams 56 diameter 43 width 4.5 gap ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/6/9/4/694adadce906bc5561b0fd5ce95ffd8ff5173b8f.png) ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/4/a/6/4a6a1b08023b2190f8a8768a293b9b797b5016f3.png) ---
**Author:** ![yoyo-matt-ratt](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyo-matt-ratt/32/69567_2.png) [@yoyo-matt-ratt](https://forums.yoyoexpert.com/u/yoyo-matt-ratt)\ **Post date:** [September 17, 2020, 12:59am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1003 "2020-09-17T00:59:04Z")
I’ve been wanting to make a singular titanium yo-yo for myself, but I just want to know how much it will cost for just one? I just started trying to learn cad, and does anybody know how to get a manufacturer to do it for me. Thanks for any help.🤙:+1: ---
**Author:** ![hobbygod](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobbygod/32/120997_2.png) [@hobbygod](https://forums.yoyoexpert.com/u/hobbygod)\ **Post date:** [September 17, 2020, 1:06am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1004 "2020-09-17T01:06:20Z")
Minimum run would probably be 5. Expense would probably be around 800-1kish. If you want me to design one to your perfect specifications, DM me. ---
**Author:** ![Ducto](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@Ducto](https://forums.yoyoexpert.com/u/Ducto)\ **Post date:** [September 17, 2020, 5:18am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1005 "2020-09-17T05:18:30Z")
![IMG_20200915_121314](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/8/a/1/8a1234db1a3577342a2efe0f3d22d7c4ad6efdea.jpeg) ![IMG_20200915_124341](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/f/4/a/f4a1c51f0c376fddd1a66d52a5e306280ca9df56.jpeg) Got some protos in recently! 59.5 x 46 mm, 62g Play is stable and powerful due to the large diameter, and it also plays very fast and floaty because of the weight/size respectively. My initial design goals for this project were to a combination of stability, power, and lightness without using a bimetal design. This was achieved by just using 7068 and going big. The larger diameter really allows for it to get a lot of rim weight despite the lighter mass, and the 7068 allows the walls to be kept as thin as possible. With these two ideas I basically limited the diameter based on the shop’s available 7068 barstock and kept a wall thickness of around 1mm. Overall the ideas behind the project were very simple (rim weight = yes, walls = thin) but I’m incredibly pleased with how it turned out. It’s a model that pushes the envelope of monometal Al performance, and plays phenomenally well. [Previous page](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547.md?page=48) [Next page](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547.md?page=50)