Kappa QR Fuse3D
This Kappa variant is 3D printed from Nylon 12, in-house on our Formlabs Fuse1 SLS printer. Nylon 12 is a tough UV stable thermoplastic and comes in any color you want, as long as it's dark grey ;)
Each set includes 2 male adapters so you can replace the original if it ever wears out. You can also purchase individual male or female connectors (with one each: 20mm and 25mm split ring).
Pull force is slightly less at 7 lbs vs. 10 lbs on the machined Kappas.
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21st century manufacturing The Fuse3D Kappa variant takes full advantage of modern 3D printing to deliver a finished product equal to machined plastic, lower per-part cost, and has zero waste. Any unused powder can be recycled back into the machine.
The Fuse3D Kappa has slightly lower retention/insertion force (7lbs vs 10lbs) because the edges of the retaining groove are not as sharp, but I've been using these Kappas on my personal keychain for over a year and have not had any issues.
The mechanism is incredibly simple and robust. Spring failure is extremely rare, but if it does happen, it's not a sudden "unscheduled disassembly" like with plunger style keychains. If there is an issue with the spring, you'll see it coming and you can easily replace the spring at home. Typically a failure results in the Kappa becoming difficult to separate vs. coming apart unexpectedly. Like everything we make, it's designed for the long haul and easily repaired.
I was constantly frustrated with my keychain and having do deal with the entire thing, when I just wanted to use part of it. Over the course of my life I tried all kinds of different quick release mechanisms and they were either ineffective or fell apart over time. The Kappa QR is a natural extenion of the Beta QRv2 flashlight mechanism. It allows you to reconfigure your keychain with only the items you need, or even combine other items into new configurations that are useful in the varity of situations that life throws at you.
The worst was my car keys swinging around, making noise, and constantly hitting my knee. No more I say! Now I just pop my car key off my keychain, put it into the ignition, and smile with the satisfaction only a finely cratfed and well designed object can bring.
* Kappa QR (1 complete Kappa set and 1 extra male half)
* Split rings (2x 20mm and 2x25mm)
Female Only
* Kappa QR Female half with canted coil spring
*Split rings (1x 20mm and 1x25mm)
Male Only
* Kappa QR Male half
*Split rings (1x 20mm and 1x25mm)
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Size1.25" x .5" (without split rings)
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weights & materialsFuse3D Nylon 12 (7g)
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where it's made
