Secure Card Store

prusaprinters

<p>This is a printable container for secure documents that you want to make sure are not exposed until you need them. This was designed to hold the mnemonic secret recovery key for a Trezor secure wallet. While it is in no way going to prevent someone from obtaining the contents, it DOES make it very difficult to access those contents without leaving obvious signs of tampering.</p><p><br>In order for it to work, you need to set a pause point near the end of your print so that you can insert your contents before allowing the print to resume and seal your treasures inside (see pic 2).<br><br>I tried multiple times to print this on its side, however, this never seemed to work properly. Printing it vertically worked great the first time, and it recommended not only for increased success but also because the breaking seam will be parallel to a print layer, making it easier and safer to open when the time comes.<br><br>Remember that it isn't waterproof, fireproof, theftproof, or un-openable. It is only designed to be tamper-evident, and kind of fun. A determined person with some crazyglue could probably open this and put it back together unless you are able to keep it otherwise secure.<br><br>Printing parameters:<br><br>Opaque PLA (brittle is better in this case)</p><p>3mm FAST printing profile</p><p>4mm+ brim for adhesion<br><br>Set a pause a layer or two below where the top starts to fill in (~111mm), and when paused CAREFULLY insert your secrets. MAKE SURE the hot-end is at temp before resuming your print.&nbsp;</p><p>To Use: Grip the container at both ends and press on the seam in the middle with both thumbs to break open, being careful to not cut yourself, and to not open in the direction of anyone or anything you care about. PLA can be hard and sharp, and you are deliberately breaking it by opening this store.</p><p>&nbsp;</p><p>Suggestions welcome. Derivatives may be possible from different versions. Source available for some Sats…</p>