I have files ready for making these yourself too. I intended to upload them earlier, but life got lifey. I’ll post a link here once I have them uploaded.
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These cases look really good. I made molds that you can make these inserts yourself with 2 part platinum cure silicone. Really cheap way to get incredibly high quality strokers in a disk shape like this. I’ll post files as soon as I am able and link here.
And photos?
Took a bit longer than expected to get a functional prototype working but here it is for a side by side comparison to the original case setup the youcup sleeves originally came with. More compact for the same sensation in a smaller space.
Looks somewhat boring and plain right? Well let me introduce you to a fully modular and dynamic system made up of a base, coupler and cap.
Let’s look at some of the features. Want just one narrow sleeve teasing you to completion? Just use the base and cap and you’re set to go.
Swap the cap out for the coupler and add more.
Throw it on your OSR to melt your head… and brain 
Not crazy enough? Put an empty base/coupler and now you can extend the system to your Fleshlight.
It’s a super compact system where the bottom of the next base is the top of the sleeve below it allowing for all kinds of crazy ideas and combinations.
The bases could be used as mold for DIY sleeves that bring super tight or feather-like teasing.
You could have an empty section between two sleeves to get a properly unique feeling of a sleeve on your base and another teasing your head.
Other ideas I already have on the list for future implementation (if there’s enough interest in it of course)
- More narrow variations similar to Fleshlight Flight, other sleeve systems. Let me know what you have so I can accommodate.
- Mold inserts to fit in the bases to make custom molds easy
- Auto lubrication coupler that could fit nicely with the OSR lube upgrades.
Last but not least at all, what are your thoughts, opinions, ideas to make this even better?
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Absolutely amazing work. This looks great and I cannot wait to get my hands on one. I highly recommend you make another post on the forum to maximize your outreach of this new idea. The only thing I would recommend to make it better are caps of varying sizes to so as to not make a huge mess for those wanting completely hands free experiences. I like the idea of a cap that has a a little reservoir opening so you can apply lube into the case so you dont have to actually remove the cap, yet still maximizes coverage to prevent big messes. I still think the handy can probably grip onto this just fine, but maybe some ribbed exterior design with a nam, (Have you thought of a name?) just enough for added grip. Thanks for the time and effort making this.
Yeah ironically a good name is the one part I’m completely stumped with.
Ideas for everything else are easy by comparison.
I know you did originally want it to be transparent, but the sleeves themselves are not transparent so it didn’t make much sense. The mess catcher cap could be transparent though.
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Can someone please measure the diameter of the internal part of these youcups i.e. without the case. TIA!
Can the 3D files be downloaded on Thingiverse or so? Aka are you sharing your design?
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Yeah I’ll share files when ready, still some tweaks to make.