As a means of opening Str8_3D's Ancient Egyptian Lock:

1. Fill the bitting bed with clay.

2. Press the key blank into place inside the lock.

3. Remove the key blank from the lock.

4. Note the locations of the pin holes in the clay impression.

5. Insert pegs, such as segments of a wooden skewer.

6. Allow clay to harden.

7. Use key to open lock.

Note that Str8_3D's model is very small compared to actual Egyptian locks, and I find that size impractical for demonstration.

• keyblank.stl  is at the same small scale as Str8_3D's lock model.

• keyblank-200scale.3mf is at 200% scale, to match the scale that I use for printing the lock. I think the 

• keyblank-200scale is also at 200% scale.

• Even at 200% scale, this is smaller than an actual Egyptian lock. 400% scale would be about right. With locks made entirely of wood, they had to make them fairly large to do well at resisting forced entry.

Video Demonstration

Impressioning an Ancient Egyptian Lock