Wooden lock; Binding order demo

In 2019 Jan-Willem build a binding order demo out of laser cut wood.
In this post we would like to share the project with the rest of the world.

Binding order is the order in which the pins bind in a lock. This is mostly due to the manufacturing tolerances but can have other causes. This concept is hard to grasp for a new lockpicker and is one of those ‘You’ll get it when you see it’ concepts. When teaching lockpicking it is common to hear: ‘I have been pushing down this pin and it doesn’t want to stay down.’ This tool can be used to demonstrate why the pin did not want to stay put.

This demo is certainly not ‘the’ solution. It is just a fair attempt that works for us. It will make the explanation better by adding both the visual and touch to the explanation. The participants can play with the board and feel the effect of binding and what the effect is of using light or strong tension.

For reference: The board is about the size of an A4 piece of paper. The base is crafted from three layers of 3mm plywood. The core is a single sheet and the pins are three or four layers, depending on the feel you prefer. Each pinhole in the base/core has a different size and different offset. All of the pins are a different size er well. This gives plenty of options to change the binding order.

We used the demo in lockpicking villages across the globe. We have found that it helps the explanation immensely when encountering language barriers. Video link to how you can use the binding order demo: https://youtu.be/WiCdws84EuQ

The binding order in this model can be quite subtle. It would great to have another with extreme exaggerated binding order also a smaller, 3D printed version, would be great to have. A bit of paint will not hurt either.

CC-BY-4.0 Jan-Willem Markus Toool Blackbag.

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