content: I thought the same but even this super-slow super-weak hammer could be useful, because it runs non-stop. You can grind flour for maybe an hour or two before you start getting tired, and all that while you're burning up energy. With this thing, you set it up and come back a day or two later and the job's done. Automation isn't always about making something that's directly better than a human at doing the job. Sometimes it's just about making something that's cheaper to run and takes no human effort. I'd still use a different design to make it more practical though.