May 28, 2025
Description
The Breach Card is a folding flatpack lockpicking kit designed to print as a single piece and fold down to the size of a standard credit card.
This Thing was designed for the Fiverr X Thingiverse Flat-Pack Fun challenge, and I wanted to explore some ideas that were educationally useful instead of purely aesthetic.
The single piece printed kit includes 11 tools:
5 detachable lockpick profiles covering common shapes for basic pin tumbler locks.
2 key bitting gauges compatible with two of the most common key profiles- Schlage SC1 and Kwikset KW1.
1 keyway tension bar.
Integrated shim edge on the card itself, useful for simple latch bypass techniques.
Traveler hook included for door latch attacks.
Over-the-door tool support – once all picks are removed, a string can be attached through the remaining frame for basic over-door operations.
Designed to explain the portability and discreet nature of these tools, the Breach Card is ideal for educating hobbyists, locksmithing students, or security professionals looking to practice and refine their skills. While a printed Breach Card will never be as useful as metal lockpicks, it is an excellent way to show those less aware of physical penetration attacks exactly what these vulnerabilities look like for a few cents of filament. The included SVG/DXF files allow laser cutting and engraving these as separatable cards of ~0.8mm/0.03" metal, which can be stitched together (this is something I haven't validated yet, your mileage may vary.)
My favorite prototyping filament was used to develop and print this build- Grey Polymaker PolyLite ABS:
https://us.polymaker.com/products/polylite-abs?variant=39574342697017&aff=1186&utm_source=affiliately&utm_campaign=aff
If you want to learn how to use lockpicks with actual tools, I would highly recommend this set with clear locks for practice:
https://amzn.to/3Fw9kJL
If you want the absolute best tools for lockpicking, physical penetration testing and even more, check out Red Team Alliance and their shop Red Team Tools.
I'm not affiliated with them in any way, but I do enjoy what they produce and the education their members provide is top notch.
https://www.redteamtools.com
Files include one .3MF, one .STL, one .STEP, two laser files- .SVG&.DXF and one Fusion file.
I printed in ABS, which is likely to provide the best results if you plan on folding it up and throwing in your wallet. This print is optimized for a 0.4mm nozzle and a 0.2mm layer height.
Disclaimer:
This lockpicking kit is intended solely for educational and lawful use. It is designed for practice on locks and keys that are owned by the end-user or for which they have explicit permission to access. Unauthorized use on locks without permission is illegal and strictly prohibited. By downloading or using this model, you agree that the creator is not liable for any misuse or unlawful activity resulting from its use.
License is Creative Commons Attribution- Non-Commercial.
I had so much fun exploring what was possible from a flatpack print that I might actually try to turn this into a product. Feel free to make it for yourself or as a gift.
Some of the links shared on this post may be affiliate links. If you choose to make a purchase through them, I may earn a small commission—at no extra cost to you. This helps support my designs and future projects. Thanks for your support!
If you greatly enjoy this model, consider sending me a small donation that will help me make more free projects like this one.
www.paypal.me/OptimalObjects
License:
Creative Commons - Attribution - Non-Commercial