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Security Lock — image 1
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Security Lock

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Bought a lock off of amazon and realized that I could just 3d print it and it would be just as good!

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3 pieces, prints best in the orientation shown in the last image without any supports. 

You will need a couple springs out of a pen or mechanical pencil. I just got one sprint and cut it in half and that gave me enough spring force for it to work. 

You'll have to slide the pin into the hinge and doorplate at the same time while using another object to hold down the springs. As you slide the pin in, slowly let the springs come in contact with it and ensure they don't turn or fall out of the slotted cavity. Once the pin is fully through both sides, use #8 screws and attach to your doorframe and you're all set!

It is impressively strong, but it is still plastic, so use at your own risk.

See how it works here:

https://youtube.com/shorts/_gWUJG8CzWo?feature=share

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