Mini Bump Key Hammer
thingiverse
I'm now selling these on my website and they have replaceable heads!!! https://www.3dlocksport.com/products.php#!/Small-Bump-Hammer/p/155655426/category=39551008 I purchased a Sparrows Bump Key Hammer, which is an excellent tool, but it's quite large, as most Bump Key Hammers are. I wanted to design a smaller version that could be easily carried with me or stored in a compact bag/case. One important note: unlike a full-sized Bump Key Hammer, you should not grip the handle firmly. Instead, hold the end of the handle between your pointer finger and thumb and let it "rock/wiggle" as you hit the bump key. Check out a video of me using this tool here: [](https://www.youtube.com/watch?v=LESs-5Q-YPQ) I've also created a full-size version! You can view it here: https://www.thingiverse.com/thing:2712872
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