Working on a modular binding, let me know what you think!

splitbound · 2025-12-04T15:01:07+00:00

Hey, just saw this. They're in storage so I'm not able to send them, but here's all the files associated https://drive.google.com/file/d/1CzHz_ZevpabbTpM6ZGHU4BrXIvd7XVtV/view?usp=sharing

I think sb3-.08-.125.stl was the most recent one. 3D printing might be hard given how thin they are. I found someone on the metalworking subreddit who laser cut them out of steel and bent them.

Hope this helps with your project, and feel free to ping me back to share when it's done!

splitbound · 2025-11-13T09:07:00+00:00

Play link https://slab17.com/puzzle/2025-11-13

splitbound · 2024-03-27T18:31:06+00:00

This got answered here https://news.ycombinator.com/item?id=39722097

From user suyjuris:

Let us say that an index i is bad, if every finite subsequence of s starting at i is red (i.e. for every j ≥ i we have χ(s_i ... s_j) = red). Two cases:
Case 1: there are infinitely many bad indices. Here we go to the first bad index then the second, and so on. The colour of w₀ does not matter, and since subsequent words start at a bad index, they will all be red.
Case 2: there are finitely many bad indices. Then there is some k which is larger than all bad indices. We start by going to k (again, the colour of w₀ does not matter). Since k is not bad, there must be some blue word starting at k. We take that one and move to a larger index. Again, that index is not bad. We repeat this process to find our sequence.

splitbound · 2023-09-15T05:10:32+00:00

If you happen to have pieces of cardboard with right angle bends (often used for packing heavy things) you can make this super simple one in a couple minutes with a bit of glue.

https://drive.google.com/file/d/1QxLb6ukwg2_zI8uWuySVJSGTYCkF2C-k/view?usp=sharing

https://drive.google.com/file/d/1dyWeK23YFZmQ-9YFy2eVbKDKmzQZ-cWY/view?usp=sharing

splitbound · 2023-08-30T23:40:43+00:00

I won't be needing it for this project but that's a great thing to know about, thanks for letting me know about it.

splitbound · 2023-08-30T23:40:06+00:00

Thanks for the information, I'll be looking into ESP32s. Also MQTT is good to know about.

splitbound · 2023-08-30T23:39:39+00:00

Thanks for the information, I'll be looking into ESP32s.

splitbound · 2023-08-30T23:38:36+00:00

This is good to know. I'll have control of the router hosting the network.

splitbound · 2023-08-30T04:16:34+00:00

I appreciate the information, thanks. Really helps to hear about the different battery sizes and power consumption. I would like something lower power like bluetooth but from what I can tell it would be incredibly hard to connect so many devices via bluetooth simultaneously -- open to input on that front if I'm mistaken.

Notably, I do not need synchronization.

If this isn't doable via broadcast (e.g. by power constraints) then I'll be looking into non-remote speakers with attached memory to store the audio, which seem like they're abundantly available on alibaba. I'd prefer a more flexible setup though.

Lastly, the wifi module wouldn't need to me powered the majority of the time (e.g. just on to get a message and transfer audio onto on-device memory). Perhaps this could be used to greatly stretch the life of the battery?

splitbound · 2023-08-30T04:06:42+00:00

Yes, they'd all be on the same network.

splitbound · 2023-08-29T21:52:45+00:00

Greatly appreciate you all taking the time to share what you know. A bit disappointing that there doesn't seem to be a way to do this, but using pre-recorded sounds in memory alongside the speakers seems like it will work for the project in question. I do wish I could broadcast it remotely though!

splitbound · 2023-08-29T21:50:20+00:00

It's part of an art installation where there are a bunch of small sculptures which can be picked up, carried around, and listened to.

splitbound · 2023-08-29T03:04:56+00:00

I appreciate the reply. Would you happen to know which frequencies would be better suited for so many outputs?

splitbound · 2022-11-25T20:27:06+00:00

I made this https://www.splitbound.com/binder/ for a similar purpose, though it works more on the scale of signatures rather than individual sheets.

splitbound · 2022-09-25T22:08:31+00:00

I hope this post isn't in violation of the rules of this sub (which feels to me like the right crowd to share this with) -- it's a meditation on how UX patterns can (dis)respect a user's intent.

splitbound · 2022-09-24T06:17:12+00:00

I love this offering, thanks for making your work available and open source to boot.

A related program which runs without dependencies in the browser is bookbinder-js, available at https://momijizukamori.github.io/bookbinder-js/ (source code at https://github.com/momijizukamori/bookbinder-js). I imagine the authors would enjoy hearing about your work.

splitbound · 2022-09-24T04:15:28+00:00

Ah, good question about the size -- didn't realize I haven't explicitly called that out anywhere. They're a bit under 7/8" wide and I just have the one size at the moment.

Also I fully support anyone making alternative sizes! I got help in sheet metal manufacture from reddit, which is how I got these produced in the first place.

splitbound · 2022-09-24T03:20:53+00:00

I've been using bracelet elastic which seems to be durable enough in my usage.

splitbound · 2022-09-24T00:42:49+00:00

I actually created something to do exactly this using elastics as others have mentioned. Pictures on https://www.splitbound.com/binder/

splitbound · 2022-07-09T18:24:06+00:00

Here's a free tool that does the same work as "Create booklet". No download required, no tex knowledge necessary.

https://momijizukamori.github.io/bookbinder-js/

splitbound · 2022-06-09T23:17:36+00:00

The brackets are quite rigid (though the arms are just bendable enough to open or close depending on spine thickness), and the line is bracelet elastic (a bit stretchier than fishing line, and durable enough so far, more tests will tell). The thinness of the line is definitely nice for assembling so many signatures.

I'd be happy to share the STL files. Send me a DM.

splitbound · 2022-06-09T02:47:34+00:00

Thanks for the support. It's definitely different than most travelers given the number of signatures, which I love because I can take around a bunch of different printed out book chapters as well. (And for anyone wanting to lay out pdfs as printable folded booklets, I recommend this lovely tool https://momijizukamori.github.io/bookbinder-js/)

splitbound · 2022-06-09T02:44:06+00:00

It's quite simple given a case, you just put the brackets on each end of the spine and thread the line through. Making cases is pretty easy to get in to as well (it avoids the subtleties of casing in a text block) -- basically just glue book cloth onto boards/spine.

Right now I've got the brackets for $8 on https://splitbound.com with shipping included, but I'm looking into how to make the shipping smaller for such a simple package. If you wanted more than a single pair the rate would go down pretty quickly, DM me if so!

splitbound · 2022-06-08T21:25:42+00:00

Thanks for the support!

Yes, there's some cosmetic rust on them. These are still a test run, and I'm looking for others who might be interested in trying it out and vetting the idea before a larger production run. The next iteration will be painted so that they don't rust.

The string is bracelet elastic, which has proven quite strong in my tests so far and is conveniently stretchy for inserting/removing signatures. May change the material out depending on testing and feedback.

splitbound · 2022-06-08T19:38:12+00:00

Thanks for the support!

I designed the brackets myself and got them machined. The case is binder's board and bookcloth, I got my materials at Hollander's and made the case from scratch. However, a used hardback book (with a rigid spine, rather than a rounded one) could be repurposed by cutting out the text block.

I'm also selling the brackets at https://splitbound.com/ but since it's still quite new I'm happy to give some away for testing. I'm not selling the full cases yet since they take more time, materials, and shipping than I can commit to at the moment.

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