Anti-bounce Ball Hammer

thingiverse

This is a remix of Walter's Hammer. Using 5mm metal balls in the head provides two key advantages: It adds weight to the head, giving it more inertia and making it more efficient. The "flying" balls also absorb impact, further enhancing efficiency. I added components called "shoes," which offer two benefits: They are easy to replace when damaged, using less filament in the process. Different filaments can be used for various purposes, such as printing one shoe in PLA for a hammer and another in PETG for removing parts. It would be interesting to test other filaments like flexible and PC materials. The head and handle have an STL tolerance of 0.2mm. I exported the shoe with varying tolerances to accommodate different printer settings and filament types, if needed. Print Settings: The head and handle don't require high infill percentages; 30% is sufficient. However, the shoes need higher infill rates for durability, recommending at least 70%. Post-Printing Instructions: Insert the handle into the head. Fill the head with balls through its hole. It's not necessary to fill it completely; some space should be left to allow the balls to absorb impact effectively. Add one or two shoes. Design Process: I was using Walter's original design, printed in PLA, and I really liked it. I used it for many tasks, but after several months, it started cracking (not a surprise, given its PLA material). I decided to reprint the head and then came up with the idea of designing modular parts. This led me to discover hammers with balls inside. I incorporated this concept into my design. I aimed to replicate Walter's design closely, especially in the head of my first prototype. However, printing it resulted in messy overhangs or supports, which caused issues fitting the shoes. To address this, I opted for a low-poly design using OpenSCAD.