# Open Throw 2.0 released - A fully open 3d printed yo-yo spec, be your own Dale Tubat!
**URL:** https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795
**Category:** General Yo-Yo
**Created:** [November 8, 2025, 4:06am UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795 "2025-11-08T04:06:54Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@openThrow](https://forums.yoyoexpert.com/u/openThrow)
#### Post date: [November 8, 2025, 4:06am UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/1 "2025-11-08T04:06:54Z")
# Open Throw 2.0
Hi, I’m Scott, I know lots of you know me, I’ve been around the yo-yo scene since 1996, but I have never had something that I myself could personally contribute.
Until I got a 3d printer in 2023 and wanted to see if I could make a yo-yo. What I found was that there was very little in the way of free resources for creating playing yo-yos and the available options for bearing seats were unbelievably bad. So that was what OpenThrow 1 was mainly about. I put it up for a bit to work on other stuff but I had this idea for a v2 that added improved models to better support DIY yo-yos as a viable alternative to purchasing other people’s yo-yos.
## Why openThrow and not _[insertCompanyName]_?
It wasn’t until I went to Indy States this year, that I was able to fully answer this question, but the three primary reasons are:
- I don’t want the player to be reliant on the availability of custom parts.
- I want the cost to be as affordable as I can make it, without sacrificing performance and only use off the shelf metal components.
- A customization standard, so that people who make their own designs can trade parts with friends and have them work.
When I learned about the Freshly Dirty Stem (and how awesome it is!) at Indy, I realized that each company is going to create their own parts and they will all be slightly different and incompatible, but generally had more in common than anything. So I decided to consider using manufacturer produced components as part of spec and will have “adapters” for a bunch of widely available systems, no vendor lock in.
### So the machined parts are better than the printed ones?
No, well maybe. It’s going to come down to personal preference, but in terms of smoothness, the Self Sealing Stem Bolt system seems as smooth as anything as I’ve built with sid effects, Cabal, or FD stems… And only cost a dollar per yo-yo with parts you can get on amazon.
### What playstyles will be actively supported?
All of them. Today I am announcing the availabily of 1A and 0A example models\*, but I have prototypes (yes, more than one, actually, three distinct kinds) for 2A. You can find one of the prototype elements in the 0A model, but it’s not quite right in the current form.
\*All models can be either responsive or unresponsive and even hot swapped for looping responses.
## Gimme!
**0A: Runabout**
[0A - Modern Responsive “Runabout”](https://makerworld.com/en/models/1956085-open-throw-2-modern-responsive-yo-yo-spec#profileId-2102267) keeping with the DS9 Trek theme, the pre production was called “The Scout”.
**1A: Synestia 2**
V1’s demo model was called the Synestia and the followup made sense to have the same lineage since the first one didn’t really live up to the name
[1A - Unresponsive “Synestia 2”](https://makerworld.com/en/models/1950870-open-throw-2-unresponsive-yo-yo-spec#profileId-2096232)
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### Author:  [@Wildo](https://forums.yoyoexpert.com/u/Wildo)
#### Post date: [November 8, 2025, 5:19am UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/2 "2025-11-08T05:19:06Z")
Runabout looks cool!
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### Author:  [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)
#### Post date: [November 8, 2025, 5:49am UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/3 "2025-11-08T05:49:17Z")
Love the ds9 references
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### Author:  [@openThrow](https://forums.yoyoexpert.com/u/openThrow)
#### Post date: [November 16, 2025, 12:58pm UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/4 "2025-11-16T12:58:16Z")
About to release some new files for this. Thinking today or tomorrow. It will change some dimensions to accomodate the FD stem and cabal, I don’t see any breaking changes not that I think many would notice 🙂
This is what I’m calling _OpenThrow - Extended Spec_
I will also update the existing models with the new features from extended spec:
The blue section at the bottom of the response area, is now called the “interconnect” and I’ll provide it as a seperate part for the yo-yo designer to build with. New features that this will support:
- FD stem - this requires the largest through hole, so it determines the new thru hole diameter and shape. to use fd stem, you will have an adapter plate to install.
- Cabal guts - also needs an adapter plate, essentially just a shim.
- OT stem v1 - backwards compatible with existing parts. It’s just a bit deeper. I don’t like breaking changes, a bit of forethought goes a long way.
All parts that will be retained. No features will go away, if you were tirelessly working to create an OpenThrow based yo-yo, you won’t lose any work… You will gain these three new features!
That’s not all that’s coming. I think it’s time to launch the looper as well! If you’ve downloaded the Runabout, you will see that I quietly launched the C-sized SOS response. This version doesn’t work very well and if you’ve tried to actually use that, probably were super annoyed by how small the holes were. The version you’ve seen me use on instagram, those holes were well sized, but that is the sunrise spacer model. I copied the variable name over to the “spec” value but only stubbed the values in lmao.That’s the only thing I didn’t print before deploy. made the new one even better!
Also, I don’t think I’ll be putting out a c-sized looper. I will have a c-sized SOS, but it won’t be released as a “looper”. I think I understand the issue I am having, but I’m going to post about that in a designer’s post to be sure I understand the physics and don’t need to do something simple.
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### Author:  [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)
#### Post date: [November 16, 2025, 1:41pm UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/5 "2025-11-16T13:41:15Z")
Love this. I’ve really enjoyed this journey and the images on insta
I do hope you go back to the drawing board on the looper at some point though
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### Author:  [@openThrow](https://forums.yoyoexpert.com/u/openThrow)
#### Post date: [November 16, 2025, 2:26pm UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/6 "2025-11-16T14:26:55Z")
Oh, the Loop420 is 100% still a thing, yoyo factory has essentially given the proper ratio for the A-size bearings. The only thing I’m axing here is the C-sized one. But, If it is a matter of gear ratio as I suspect, maybe a slightly bigger diameter fixes the whole thing and I’m being silly
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### Author:  [@Simyo](https://forums.yoyoexpert.com/u/Simyo)
#### Post date: [November 16, 2025, 5:02pm UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/7 "2025-11-16T17:02:17Z")
As a representative from the JakeNog consortium I’m extremely disappointed that it’s available on maker world and you aren’t receiving any bars of gold pressed latinum for them. You really need to review your Ferengi rules of acquisition😂. Also always remember to beware of the solace minions of orthodoxy.
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### Author:  [@openThrow](https://forums.yoyoexpert.com/u/openThrow)
#### Post date: [November 16, 2025, 5:38pm UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/8 "2025-11-16T17:38:51Z")
Lmao, yes! Actually on that note, the system is free but I will sell some on [openthrow.com](http://openthrow.com) soon based on the system. I want people to use it for free, so I can design stuff for it and the user can buy things that work with it.
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### Author:  [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)
#### Post date: [November 17, 2025, 12:54am UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/9 "2025-11-17T00:54:57Z")
Best comment on this server in forever
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### Author:  [@Simyo](https://forums.yoyoexpert.com/u/Simyo)
#### Post date: [November 17, 2025, 5:42pm UTC](https://forums.yoyoexpert.com/t/open-throw-2-0-released-a-fully-open-3d-printed-yo-yo-spec-be-your-own-dale-tubat/435795/10 "2025-11-17T17:42:10Z")
Thanks man, I’m more of a tng fan but I dig ds9 as well. I’m semi confident the first trick anyone should do with a runabout is wormhole :joy: