Chastity Cage Locking Pin

Replacement pin that uses a handcuff key to actuate.
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updated September 24, 2023

Description

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Inspired by the New Fun Chastity Cage Hinge Pin but built completely from scratch. The design is based on an unbranded cage purchased from Amazon. Use a standard handcuff key to rotate/lock it once in place.

The dimensions (diameter x length) for the individual segments of the pin are as follows:

  • Cylinder+Taper: 6.28 x 18+4.5
  • Dowel+Tip: 3.0 x 3.0+0.5
  • Locking Tab: 3.0 x 6.0>5.25 (from centre of cylinder)
  • Key Way/Peg: 3.68/2.68 x 3.75
  • Key Flag: 1.0 x 3.5 (from centre of Key-Way)

The tolerances used for the handcuff key way are extremely tight to preserve as much material (and strength) around it. My Smith & Wesson key is an exact fit; it slides in with minimal resistance and lightly holds onto the pin. You may need to adjust the tolerances around your key and/or printer.

Print vertically to ensure the key way and peg print as accurately as possible. This will require a support for the locking tab, but this segment is easiest to clean up post-printing.

I've had no strength issues even with regular PLA. The key way likely won't tolerate much poking around though so I advise against trying to unlock it without the key. ;-)

The "Horizontal Scaling Factor Shrinkage Compensation" value in Cura had to be adjusted to 105% for the model to print out (according to my digital caliper) at the exact dimensions specified.

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The author marked this model as their own original creation. Imported from Thingiverse.

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