Functional Pin Tumbler Lock Model
by Thing-O-Fun, published
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Functional Pin Tumble lock. All of the components can be printed with the exception of the helix compression springs. These springs can be taken out of standard click pens. The springs I made this for are 4mm OD and ~20mm long.
I made a small window in the "Outer Barrel" to view the key pin pushing up on the driver pin.
This was a quick project to familiarize myself with the design constraints required for successful FDM designs/prints. I thought I would distribute since it could be fun for teaching and demonstrations.
1)Print all parts
2)Setting the key
a)Insert the key into the plug.
b)Insert 5 key pins into plug.
c)With a pair of wire cutters or knife, cut the key pins to be flush with the surface of the plug. Sand as necessary.
d) Remove key and press all key pins back into the plug.
a)Cut remaining key pin short (~5mm or so).
b)Insert spring then short key pin into the side of the plug
c)While compressing the spring, insert plug into outer barrel.
d)Rotate into position to align key pins with holes for driver pins.
e)Add retaining ring at end of plug to capture the plug.
4)Inserting driver pins
a)Insert driver pins into 5 available holes. (The smaller OD goes on top and will help capture the spring)
b)Insert springs into 5 available holes.
c)Compress the back spring to be flush with the surface of the outer barrel.
d)Slide the top over the first spring and compress the next.
e)Continue until all springs are covered and top secured.
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Functional Pin Tumbler Lock Model by Thing-O-Fun is licensed under the Creative Commons - Attribution - Share Alike license.
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