Bump Key Hammer
thingiverse
I'm excited to be selling these on my website, where they come with replaceable heads! You can check them out at https://www.3dlocksport.com/products.php#!/Bump-Hammer/p/155651360/category=39551008 I recently purchased a Sparrows Bump Key Hammer, which is an excellent piece of equipment. I wanted to see if I could replicate it and make one more affordable. The Sparrows hammer costs around $12 USD, while the materials for my version cost approximately $5 USD. Check out this video of me using the bump key hammer: [](https://www.youtube.com/watch?v=ZOsHhFzJw7c) If you're interested in a smaller version, it's available here: https://www.thingiverse.com/thing:2707828
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