SnapCuffs

self-locking wrist & ankle cuffs with print-in-place hinge and compliant-mechanism lock

easy to put on - printed in a few hours

Updates:

• 01.03.24: Fixed STL files uploaded
• 12.01.24: Added back "old" version without the printed hook.
• 29.12.23: Added a printed ring to eliminate the extra D-Ring.

Description

After multiple iterations, I want to release my SnapCuffs, which can be put on very quickly and stay quite secure on the wrist.
Those cuffs are designed in Fusion360 with a lot of customizable parameters. I'd love to upload that file as well, but unfortunately it is not supported by the Thingiverse Customizer.
I added a screenshot of the customization options available. If for whatever reason you need a model with an adjusted parameter, just ping me and I'll likely generate a model for you.

I added the wrist cuffs in a variety of sizes, as they need to be printed precisely for your wrist circumference.

Which size to use

Measure your wrist circumference as described e.g. here in mm and take the larger size. If you need a custom size, just message me and I'll likely generate it for you.

How to print

• add support for the ring and the hook, the lock has integrated support
• Use PETG if possible, as it is less brittle
• I print with 40-50mm/s on CR10s Pro and full speed on P1P, but that depends on your printer
• light colors look much better on the wrist IMO :)
• remove the small nibble in the lock with small pliers
• print the key and test it before applying the cuffs!

Additional Things

The key can be found here

I added the following D-Ring as seen in the picture: ebay page
It needs a 20mm width to fit onto the cuff. The other dimensions of that one are 15mm height and 3mm thickness.

Have fun! :)