The infinite Notebook. Expandable with different spines, robust and reusable. Comes with a pen compartment.
Once you run out of blank pages you can just switch the paper out and keep the used ones stored within a bigger archive. Single and multi-color printing models are included as STL and 3MF! They work with all current and usual multi color setups. With normal 80g Copy paper one spine segment holds up to 20 papers which results in 80 Pages. A printed pen is included but you can also use your own preferred choice. For the default pen you will need a BIC Crystal fine.
Versions included
What you need
Rubber Bands All sizes listed below work with all versions. Slightly different ones will work, too. I optimized the design for the most common ones around. So, changes are very high that the ones you already have at home will do the job just fine.
Assembly (Go along with the images)
Maintenance
Print settings Required print bed size in mm: 230 x 230 for US Letter, 220 x 220 for Din A4, 160 x 160 for Din A5 and 150 x 150 for US half letter Material usage: 200g for Din A4 and US Letter, 100g for Din A5 and US half letter
Material: PLA Print direction: files are rotated correctly Support: none Nozzle size: 0,4 mm Line width: 0,4 mm Layer height 0,2 mm Infill: 15% Build plate adhesion type: none
22.05.2026: Release 4.0 01.06.2026: Update 4.1 Now works with 50 and 60 x 1.4 x 1.4 mm and US type 32 and 33 rubber bands Better back and insert that is easiert to push in and remove. Can now accomodate different sized rubber bands increased front hole diameter for the pen rubber band Ergonomic cut out for easier pen removal New images added and description changed to display the updated assembly
What size/number are the rubber bands supposed to be?
I also need this. Maybe it's a US thing but all the rubber bands I have around the house are much wider than the ones used in in the phones and they don't work well.
Std American Rubber bands seem to be ~65mm diameter @ 1mm x 2.75mm VS the 60mm diameter bands which are 1.4mm x 1.5mm in comparison. Std American can work with some effort, but for the pen hold down i had to snip of fa bit so it is not connected. so far is fine as it is pinched very tight due to the size difference and the cut is in the middle of the long strait section and not moving.
I tried a #33 rubber band. I was able to get it into the pen holder, but I've snapped two trying to get it into the back cover. It's very frustrating.
I Took my snips and made a small cut and tore off the back half. It worked like a champ. The sides still have the full channels, so it's quite snug. I'll post a photo in the discord.
Yes definitely post a photo! Need to know more about these US rubber band sizes
Ohhhhh that is interesting! I did not know that there is this other type of rubber band, if you happen to have the time, please join the discord with maybe some photos and more measurements so I can see what's going on there!
The back cover bar was a fight to get it to work and was only doable with soft jawed clamps to hold the band in place while the rest was worked in, additional clamping to hold as needed till done. And the back bar had to be set in place with the same/bigger camp (for more pressure) but it did get in eventually.
That depends a little on your preference and several sizes work, but 60 mm seem to work best in my opinion!
Update: I am currently looking into making an additional version for these rubber band, will post a changelog once it's done and tested
Version 4.1 is out! Please check the changelog for a detailed update
A3 paper sizes is high up on the improvement list, A7 too. I have a couple of more part ideas that I will start working on soon! Love the shiny bright colors 😍
Love the colors!!
Love the sparkle 💖
Can you please make a connector between spines? The connector should somehow looks like the hinge of the cover, but two sided to connect both spines together. Trying to have a huge notebook with two spines and connect them through hinge and filament.
I have this on my improvement list! But every hinge adds a gap that might mess with the writing flow - I am on it though
how about a new set of spine where one side is just normal 3 hinge, and another side design to have 2 hinge (like the cover). This might reduce the added distance. But i am sure you have thought of this. Looking forward to it! Thanks
How can I print the other spine sizes also in 2 different colours like the one that comes with the .3mf file? The .stl files provided are all just one colour...
Select the fill tool in your slicers painting setting and simply click on the surface :) turn the edge detection really low
Love the design, but struggling really hard to fit the inserts in for both US sizes. I checked the updated version just to be sure and its the same size I have. I even tried the bending method mentioned in one of the comments and its still not going all the way.
I'd also suggest throwing up some links to Amazon rubber bands that are the right size and thickness for reference. Hard to find ones in the US that are thin and the right size.
The updated version has a different insert design, have you printed it already? It specifically addresses the issues with US rubber band. It works with size 33 and 32 - the most common ones
Subscribed just for this as versions using EU paper sizes are hard to come by.
Thank you! Yes I made the US sizes knowing this might be hard for our maker friends oversees!