Reusable Case for Tenga Cup Sleeves

It seems so wasteful for Tenga's Cups to be one-use products. I like the product, but with proper maintenance, I believed I could safely use it more than once. However, Tenga did not design the cups to be reassembled. So, I spent too much time in CAD designing this! 

This system allows you to re-use the Tenga Cup sleeves after removing them from their original casing for washing.

Usage

You will need to salvage a couple things from the original cup for this to work:

• Sleeve
• Foam Padding

My design uses a ring placed in the entrance of the sleeve to hold the sleeve securely in place.

#todo: photos of assembly

This case can be used both with the single-sided cup sleeves and the double-sided cup sleeves.

The only difference between them is whether you put a Ring Capture or End Cap on the opposite end.

Safety

The Tenga Cups were intended to be one-time use products. You should be very aware that using them multiple times introduces yourself to the danger of bacteria buildup or some other malfunction that could put your health at risk. So USE THIS AT YOUR OWN RISK and be smart about it.

• Wash it and allow it to dry after every use.
• Replace the sleeve with a new one on a regular basis.
• Consider using a condom to separate yourself from any bacteria growth.

Modifications

You might want the case to be a different size or have different properties in general. That's why I have made this an open source project.

You can access the source OnShape file here. You can create a copy of it and modify it to your personal preferences.

There are several variables you should understand how they work before you modify anything.

Configurations

These are the numbers that will most likely get the model to be the size that you want.

The configurations menu is on the right side:

I've prepared several configurations that represent different standard sizes of cups. Be aware that I haven't tested the regular size cups, but I did measure them and use my best judgement to adjust the “Regular Size Cup” configuration.

The files included here are the US Cup, Regular Cup, and Adapter for Regular Cup.

Variables

Variables can be found in the timeline on the left with the X symbol. These can be used to fine-tune various parameters that control everything from wall-thickness to the pitch of the threads.

Sketches

Finally, if you need to edit a small feature, you can dive into the sketches and change the dimensions or constraints. Be warned, this has the highest likelihood of breaking the model and introducing errors into subsequent features. Make sure to change a little at a time so you understand what broke things.

Printing

#TODO 

Final Thoughts

It can be difficult putting so much effort into something that I don't readily associate with my wider portfolio. It's also going to be difficult to see if it's useful to anybody since I'm sure to not be the only shy one about this project. Despite that, I'm proud of the functionality and mechanisms involved, and the CAD is some of the best I've done.

If you find this model particularly useful, please leave a tip for one of my favorite charities:

• Planned Parenthood
• Wikipedia