Backpack holders for Quickie Neon

I made this simple thing to fix my backpack on the back of my manual wheelchair using the already present velcro straps of my backrest and carabiners

It's very robust, the only time I've ever broken one was jumping off a 40-centimeter-high bus (yes! 🥲) with a full backpack, but I've since revised the settings and everything's running smoothly! ♿

My wheelchair is an old Sunrise Medical Quickie Neon and I'm using 6-mm-thick carabiners :)

And my backpack is also an old thing, a ~10 years-old Eastpak shoulder bag, recent models would work too!

For maximum strength, print it using PETG and those parameters:

• perimeters: 5
• extrusion wight: 0.6mm
• layer height: 0.3 mm
• infill: gyroid 20/100
• perimeter generator: arachne
• avoid crossing perimeters: on (optional but better visual result)

Feel free to use the properly configured PrusaSlicer project

Print it twice with one mirrored (along Y axis)

I provider STEP and Fusion 360 source files for easy modification :)

As all my models, it is available as pay what you want.

So if it helps you, please consider giving me a tip or saying thank you in the comments ^w^