Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Customizable Safe / House / Padlock keys

by Belfry, published

Customizable Safe / House / Padlock keys by Belfry Mar 5, 2013


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21652Views 3611Downloads Found in Household Supplies


Print your own safe, house or padlock key with this easy to use key generator


Warning! - this thing is for printing a PLASTIC key. This key is now optimized for printing at 0.29mm layers, and is only 7 layers thick!!! Although it works fine - it is plastic - and can / will break off if you are not careful! With that in mind, you simply need to enter in an appropriate code for your key, and select the style of key you want to print. You may want to have a nail file on hand, to remove any extra bits of plastic first. Leave the code number blank, to generate a random key. I would love to see copies that anyone prints - however - BEWARE - you might not want to post a working copy of your house key - someone else might print one too!

If you hold the key in your left hand, with the blade pointing to the right, the KeyCutCode reads from left to right. 0 for no cut up to 9 for a maximum cut. (0 to 6 when using the Kwikset defaults) You can switch to the 'top' view in 'customizer', and hold your key in front of the screen while you adjust the values. It may take a couple of prints to find just the right match, fortunately it doesn't take long to print, and doesn't use up a whole lot of your filament. You might want to print your first try using the 'straight' key header, to save even more time / filament!

To get the key to slide in nice and easy, use a nail file to buff / round off the tip of the key. Make sure it feels nice and smooth when you run your finger along the front. It also helps if you buff / smooth the front and back sides just a bit. For the house key, it helps if you buff the upper half of the back side just a little as well.

For the safe key, I had to do some buffing around the outside of the cylinder pin slots, but with just a little work, I can now reproduce a working key for my home safe - Kind of scary! I bet that the latest printer will work straight from the build platform.

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what program do i open this file in ?

Customizer, it's directly on Thingiverse. Or OpenSCAD if you can code and want to do it manually.

Nice concept. I can't get "Safe Key" to work. I only print 4 cuts instead of the 7 needed. Any ideas on what I should change? BTW, I changed the outside dia to be smaller so it would fit my lock. Sure want to get this working right. I may try try some Kwikset keys next then 4 pin padlocks.
Thanks for the files

UPDATE: Operator error! I entered numbers with commas between (1,6,4,...) A no-no I guess. Will just enter 164... I think that will work.
Thanks again for the neat file.

Worked on my house key first try. Thanks!

Thanks, that's always nice to hear!

nm disregard it didnt change, i left it on house key. Still cant make it work

Wait, ive found that on my key there is 3030: i hadnt been adding the : and that makes it different, ill print it and see.

Ya ive done everything and still cant get a working key.

i have a master lock like in the pic above but i put the 9 # code in and the key doesnt unlock it i have it set to pad lock

Thanks for playing with the key maker! I'm not quite sure just what to tell you - I only had a couple of locks to work with for testing things out when I created the program. The best thing I can suggest is to try a couple of different copies, and keep a plain old nail file around. Sometimes all it takes is just a tiny bit of filing to make things work nice and smooth! Good Luck!

please get back to me soon

If you have a set of calipers you can measure each cut and refer the a depth and spacing guide to ensure the correct numbers. Be sure to use the master lock chart for master locks and american lock chart for american locks.
Depth and Spacing Guide: http://www.locksmithschool4u.com/downloads/Residential%20&%20Comerical%20Depth%20and%20Space.pdf

Thanks for the link!