3D preview of Modular Notebook Spine Binder
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Interactive 3D model of Modular Notebook Spine Binder

Organic and sculpted

Modular Notebook Spine Binder

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Bounding box
81.5 × 120 × 19.0 mm
Engine
Organic B-rep
Parameters
0
Published
October 28, 2026

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The prompt

Spines All 4 Versions come with Spines ranging from 1 to 6 slots. They are included in both regular and alternating form, so you can really create an infinite Notebook. What you need The printed parts Household rubber bands Regular copy paper Rubber Bands All sizes listed below work with all versions but are optimized for the default DINA4 and US Letter paper sizes. Different sizes work, too. It makes sense to get a pack with different sizes to also print the very large or small sizes. 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. 60 mm diameter and 1.4 x 1.4 mm strength. Those are the most common ones you can get in most supermarkets. 50 mm diameter and 1.4 x 1.4 mm strength. US Size 33 US Size 32 Paper With normal A4 or US Letter 80g copy paper you can fill up all sizes. Simply cut the paper up for smaller ones or use tape to combine two. If you are a frequent user, it makes more sense to buy the other paper sizes instead. Assembly (Go along with the images) Choose your version and spine size Print all parts Insert one rubber band into the front from the inside, use a scraper or other thin object to push it inside Place another rubber band in the insert, by pulling it slightly, it will go in easily Push the insert into the back, starting with one of the rounded corners Apply a bit of pressure to fully push it inside Insert pieces of filament as hinge to connect the front, back and spine Pull it back a bit and cut it slightly shorter than the total length of the spine Push it back in, so no ends stick out on either side Fold up to 20 pieces of copy paper in half per spine segment (Tip: by folding them one by one the result will be slower but more precise in alignment) Bind the notebook. Either by wrapping the rubber band around the pages and cover - or by doubling it and using the little knobs inside of the back. Maintenance To change spines, use a piece of filament to push out the existing filament hinges and reuse them on the new assembly In order to switch spines, it makes sense to remove the covers first for easier handling If the rubber band inside of the insert breaks, use a thin object as lever to remove it and place a new one. I recommend printing one of the bigger spines as archive, this way you can take a small version with you and once full, archive your notes in chronological order. 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

Parameters

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Modular Notebook Spine Binder - Free CAD Model (STEP, STL) | TextoCAD