# Yoyo CAD & Prototyping Adventures
**URL:** https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547
**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:** 62
### Author:  [@Prion\_yoyos](https://forums.yoyoexpert.com/u/Prion_yoyos)
#### Post date: [November 30, 2022, 11:28pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1246 "2022-11-30T23:28:44Z")
thank you
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### Author:  [@Prion\_yoyos](https://forums.yoyoexpert.com/u/Prion_yoyos)
#### Post date: [December 1, 2022, 6:10pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1247 "2022-12-01T18:10:14Z")
The Plasmid
oversized throw
planning a bimetal called the spliceosome once i’ve got the size and weight worked out
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### Author:  [@Prion\_yoyos](https://forums.yoyoexpert.com/u/Prion_yoyos)
#### Post date: [December 2, 2022, 8:57pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1248 "2022-12-02T20:57:56Z")
the spliceosome! a smaller bimetal version of the plasmid
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### Author:  [@MarkD](https://forums.yoyoexpert.com/u/MarkD)
#### Post date: [December 3, 2022, 12:11am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1249 "2022-12-03T00:11:29Z")
That’s a cool shape and size! What’s the motivation/inspiration behind it?
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### Author:  [@Prion\_yoyos](https://forums.yoyoexpert.com/u/Prion_yoyos)
#### Post date: [December 3, 2022, 1:33am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1250 "2022-12-03T01:33:05Z")
honestly i just saw yoyos like the beater, and thought they looked nice, but a bit too organic and featureless, so i took my original fingerspin-oriented yoyo and added a bunch of inner rings and a small extension to the fingerspin divot, before adding a bronze wing to keep it stable enough for those offcenter horizontal tricks.
the name is one i chose to be in keeping with this yoyo’s inspiration
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### Author:  [@MarkD](https://forums.yoyoexpert.com/u/MarkD)
#### Post date: [December 3, 2022, 3:59am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1251 "2022-12-03T03:59:28Z")
A heavy one for once. ~68g, 48mm wide, 57mm dia
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### Author:  [@malachigutwein](https://forums.yoyoexpert.com/u/malachigutwein)
#### Post date: [December 3, 2022, 7:07am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1252 "2022-12-03T07:07:13Z")
Had a ton of fun designing and printing these using SketchUp!
The 2nd one from the left I got from a Thingiverse file but changed it a little bit.
([Unresponsive Performance Yo-yo by DominictBarry - Thingiverse](https://www.thingiverse.com/thing:3550936)). I got some ideas from some B!ST yoyos.
Most of them play surprisingly well but I’m wondering if I made the rim wall (if that’s what you call it) smaller and had a more gradual slope, if it would have less friction and therefore spin longer (see arrow)?
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### Author:  [@MarkD](https://forums.yoyoexpert.com/u/MarkD)
#### Post date: [December 3, 2022, 6:30pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1253 "2022-12-03T18:30:23Z")
> [@malachigutwein](#):
>
> had a more gradual slope
it should have a gradual slope to keep the string going into the gap properly, anyhow - do you have a cross section for this? I’d like to see it!
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### Author:  [@hobby\_master](https://forums.yoyoexpert.com/u/hobby_master)
#### Post date: [December 3, 2022, 6:53pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1254 "2022-12-03T18:53:48Z")
This looks fun!
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### Author:  [@erebus](https://forums.yoyoexpert.com/u/erebus)
#### Post date: [December 4, 2022, 12:41am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1255 "2022-12-04T00:41:19Z")
first prototype, planning on 3d printing it. the yoyo is about 49 mm width and 58 mm diameter, as it stands the weight is 43 grams, but I want to change that to a more standard spec
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### Author:  [@malachigutwein](https://forums.yoyoexpert.com/u/malachigutwein)
#### Post date: [December 4, 2022, 3:38am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1256 "2022-12-04T03:38:34Z")
Yup, here it is! They all have the same bearing seat design but here’s the yoyo featured in the 2nd photo. (I had to edit this yoyo after rotating the cross-section because of the cup design so this cross-section will not produce the exact yoyo if you rotate it).
Do you think it would need to have a gradual slope like the purple line in this photo or something different?
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### Author:  [@Kray](https://forums.yoyoexpert.com/u/Kray)
#### Post date: [December 4, 2022, 1:56pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1257 "2022-12-04T13:56:18Z")
What causes a lot of friction in your case is the too low circular vertex count. Looking at your picture I would say your Yo-Yo has 20-24 sides but for a „smooth“ print you should use at least 90+ or tools like arc welder. All the little “bumps” will cause your yoyo to slow down when spinning and touched by the string.
What you have now is:
What you want is:
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### Author:  [@malachigutwein](https://forums.yoyoexpert.com/u/malachigutwein)
#### Post date: [December 4, 2022, 2:21pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1258 "2022-12-04T14:21:15Z")
Hey, thanks! I actually made it 24 sides on purpose cause I thought it looked kinda unique how it reflected the light, but if it actually affects play then I probably shouldn’t have. I’ll make sure to make my next prints smooth! btw, is “arc welder” a SketchUp tool and if so will it smooth arcs that have the wrong number of sides (I designed other yoyos with 24 sides as well).
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### Author:  [@MarkD](https://forums.yoyoexpert.com/u/MarkD)
#### Post date: [December 4, 2022, 2:41pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1259 "2022-12-04T14:41:30Z")
> [@malachigutwein](#):
>
> Do you think it would need to have a gradual slope like the purple line in this photo or something different?
Yes, like that. Otherwise, the string can “rest” on that ledge instead of going in to land on the bearing.
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### Author:  [@Kray](https://forums.yoyoexpert.com/u/Kray)
#### Post date: [December 4, 2022, 2:49pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1260 "2022-12-04T14:49:07Z")
If you like the style just make the outer part 24 and use a higher poly rate around the bearing so you get best of both worlds 😄.
ArcWelder is G-Code modification tool which helps optimizing arcs. But not all printers support arc tags (G2,G3) so you need to check first.
I would anyway recommend best prepare your model as good as possible in your 3D tool of choice. Tools like ArcWelder are more to optimize at a later stage if necessary.
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### Author:  [@p44company](https://forums.yoyoexpert.com/u/p44company)
#### Post date: [December 22, 2022, 2:40pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1261 "2022-12-22T14:40:43Z")
wentback to my drawing sketch to make some minor changes to make a tri metal construction starting on mono design.
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### Author:  [@MarkD](https://forums.yoyoexpert.com/u/MarkD)
#### Post date: [January 14, 2023, 8:26pm UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1262 "2023-01-14T20:26:25Z")
I created a macro/plugin for FreeCAD to smooth out & speed up yoyo design spec calculations while tweaking a design to get the right weight, MMOI, etc.
Source code is here, if you run this as a macro in FreeCAD it’ll open up the drawer UI that lets you calculate all the info you need.
>
For it to work, the density needs to be typed into each part that you want to include, as a decimal value at the end of the name of the part in the document tree.
Here is a screenshot of it in use:
This has already made my iteration time much quicker for dialing in a specific mass. I hope other people can get some good use out of it, too!
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### Author:  [@Mark\_Leithead](https://forums.yoyoexpert.com/u/Mark_Leithead)
#### Post date: [January 16, 2023, 3:19am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1263 "2023-01-16T03:19:49Z")
> [@MarkD](#):
>
> For it to work, the density needs to be typed into each part that you want to include, as a decimal value at the end of the name of the part in the document tree.
>
> Here is a screenshot of it in use:
>
> 
This is awesome! 😁
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### Author:  [@Prion\_yoyos](https://forums.yoyoexpert.com/u/Prion_yoyos)
#### Post date: [January 20, 2023, 4:46am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1264 "2023-01-20T04:46:15Z")
My newest design, the Beef!
It’s inspired by the CLYW Beartrap, and the OneDrop Thorne.
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### Author:  [@MarkD](https://forums.yoyoexpert.com/u/MarkD)
#### Post date: [January 21, 2023, 12:05am UTC](https://forums.yoyoexpert.com/t/yoyo-cad-prototyping-adventures/291547/1265 "2023-01-21T00:05:18Z")
That looks really interesting! What are the dimensions/weight you have planned for it?
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