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  • print in place

  • easy

  • car

  • easy print

  • key

  • useful

  • remote

  • practical

  • safe

  • safety

  • auto

  • automobile

  • security

  • secure

  • fob

  • antitheft

  • keyfob

  • thief

  • faraday

  • faraday cage

Protect your car from theft with this Safe Key enclosure.

This protects your keyless entry equipped car from theft. The thieves are using an amplifying device that receives the radio signal from your key fob, sending it on to a second thief at your car who can then unlock it, start it and drive off.

Check out this video!

https://www.youtube.com/watch?v=PEMOWPj2i-0

When your car remote fob is in this Safe Key enclosure, the bad guys can’t intercept the signal, unlock your car and drive away.

The Safe Key enclosure is based on the Faraday cage principle which blocks radio signals.

 

The hinged outer shell is completely print in place, no assembly of the outer is required. 

 

PRINT INFO

Print settings I used:

Print the outer with 3 walls, this makes the latch stronger.

Any filament would be suitable, mine is PLA silk (regular PLA would probably make the catch stronger) outer shell and regular PLA for inner shells and lock rings

No brims

No supports

You need to print:

-one outer shell

-one inner shell lid

-one inner shell base

-two lock rings

It’s pretty simple to put together, but here’s a link to assembly instructions if needed:

https://youtu.be/Hnk4_ifJJrA

You will need:

Aluminium foil 130x160mm to cover the inner shell base

Aluminium foil 140x170mm to cover the inner shell lid

 

If you think the design is ok, hit the like button. Or if you've got some improvement ideas, or anything else, leave it in the comments.

If you print it, leave a pic in the Makes, I'd like to see it. 

Bill of materials

  • Name
    Quantity
    Notes
  • 1
    Aluminium foil
    1

Originality of the Model

The author declares that this work is their personally original model

This model is licensed under the following terms:

Credit must be given to the creator

Only noncommercial uses of the work are permitted

Remixes must be shared under the same license

Models(5)

  • model file image
    outer.stlDesigner

    555.84 KB

    2025-08-12

  • model file image
    inner shell lid.stlDesigner

    232.80 KB

    2025-08-12

  • model file image
    inner shell base.stlDesigner

    232.80 KB

    2025-08-12

  • model file image
    lock ring.stlDesigner

    50.08 KB

    2025-08-12

  • model file image
    SafeKey.3mfDesigner

    312.18 KB

    2025-08-12

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