Just did the second hands-on project in the PCDI Locksmithing program.  Disassemble, mess with and reassemble a pin tumbler lock.  First, some vocabulary that I would have found useful, as you have to remove these two things to get at the pins:

image

I’m learning that in locksmithing “retain” just means “hold in place”.  Here’s what happens when you remove the spring retainer cap:

image

All the springs pop out!

Here’s a shot of the whole thing disassembled:

image

Corrugated cardboard makes an excellent spring & pin holder!  As you can see, the lengths of the bottom pins correspond to the cuts in the key.  If you put it back together in the wrong order and insert the key, the plug looks like this:

image

If you put them back in the right order, you get a proper shear line, like this:

image

Looking down into the plug before reinserting the top pins & springs:

image

All put back together:

image

Not hard at all!

Finished lesson 4 last night, aiming to get through the lesson 5 test tonight or tomorrow.  Zooming thru this. 🙂

Advertisements