Printable PadLock

by jeffkohrman, published

Printable PadLock by jeffkohrman Oct 27, 2010

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All plastic, all printable padlock. To lock things, you know? Comes with key! Download the PadLock STL.zip, and extract to use the files.

Print & Enjoy!


Just print out, and put together according to the Assembly.STL file. the pin holes are 1/8", so if you don't want to get the appropriate dowel, you could be tricky with the sandpaper and make your 3mm plastic filament work in its place.

NOTE I have only included the .STL files in the .ZIP, but if you would like me to upload a specific filetype, don't hesitate to ask!

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The small lock pin comes out 3mm too short when I print this, all other parts are great

Does this work when its printed assembled

This looks great. My daughter wants a padlock to use as a bracelet for a cosplay outfit... Think this will be perfect. Might have to make it slightly larger, but not much.

do you use pegs to hold it togeather?

I really like this. I've made it my Thing of the Week on 3D Genius - thanks for such a good design!


Like it.

Love it.

I made a minor modification to the internal workings.
Now that it's done I wish I'd made it so the lock 'pops' open when unlocked.
Oh well, other projects for the moment, but it's possible, but unlikely I'll get to that modification.
I just shorted the 'spri
ng' with a side cutter.
I also heated and bent the spring a bit to make it more aggressive.

Works pretty darn good.

Latch pin

This looks like the perfect thing for a child's toybox :)

Very nifty.

what is the diameter of the shackle?

The shackle measurements are:

inside diameter - 1 23/32"
outside diameter - 2 11/32"

It also has an approximate useable area of 1 13/32" diameter. Hope this helps!

so this should fit in a hole of 5/16 or larger?

sounds like a perfect lock for at work. where security isnt really needed, just something to keep people from easily opening my locker

*the shackle is exactly 5/16", so a larger hole would be ideal, yes.

Awesome, does the locking mechanism actually work?

The locking mechanism seems to work great in the full sized print, the mini however, takes some heavy sanding and alot of fiddling with skeinforge..

My design should work in plastic (as well as wood), the only concern I have is the flexibility of the spring pin. I will post my results once I'm finished printing the parts.

Very useful! Now I finally have something less expensive -- and lightweight! -- to lock my bike when on a tour.

you're kidding right? using a plastic lock to lock your bike?

great idea..now all the person needs is a pair of pliers instead of bolt cutters......

now all the person needs is a lighter...