I have designed a small strap winder for backpacks, so that the unnecessary straps do not get on your nerves.

Just follow the instructions shown as a GIF as the sceond file in the gallery (or download it if it doesn't work that way)

Perfect for school or outdoor activities

Print 2 of them for every backpack

Big thanks to Justway.com for sponsoring my 3D models! 🙌

Justway is a leading digital manufacturing platform specializing in CNC machining and 3D printing. Whether you're prototyping or scaling to full production, they offer fast, precise, and professional solutions—all through a streamlined online process.

🔧 CNC Machining
3–5 axis milling, turning, wire EDM, and more—tight tolerances (±0.020 mm), over 30 materials, and options like anodizing, threading, and custom finishes.

🖨️ 3D Printing
They support all major additive technologies (FDM, SLA, SLS, MJF, DLP, SLM), including metal printing. Choose from 100+ materials and get parts in as fast as 1–2 days.

📦 From Prototype to Production
Upload your CAD, get instant quotes, and track everything from one dashboard. With 200+ industrial printers and their own CNC shops in China, Justway handles everything from single parts to mass production.

👉 https://www.justway.com/

High quality prints:
👉 https://www.justway.com/manufacture/?type=2&reffercode=HQ3

Creality