Thingiverse
Bump Key Hammer
by tvirelli
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I'm now selling these on my site and they have replaceable heads!!! https://www.3dlocksport.com/products.php#!/Bump-Hammer/p/155651360/category=39551008
I bought a Sparrows Bump Key Hammer. It is a great piece of equipment. I wanted to see if I could replicate it and make one cheaper. From Sparrows the cost of the hammer is about $12 USD. This hammer costs about $5 USD in materials to make.
See a video of me using it here:
[](https://www.youtube.com/watch?v=ZOsHhFzJw7c)
If you are looking for the mini version it is here: https://www.thingiverse.com/thing:2707828/
I bought a Sparrows Bump Key Hammer. It is a great piece of equipment. I wanted to see if I could replicate it and make one cheaper. From Sparrows the cost of the hammer is about $12 USD. This hammer costs about $5 USD in materials to make.
See a video of me using it here:
[](https://www.youtube.com/watch?v=ZOsHhFzJw7c)
If you are looking for the mini version it is here: https://www.thingiverse.com/thing:2707828/
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