Hand Cranked Grinder | Homemade Tools | DIY

Hi guys, I am building a compact hand cranked grinder in this video. A prototype. The dramatic intro is a little dig at our dependence on electricity 🔌💡. With a hand cranked grinder, the world won't stand still after a blackout. 🌍🌎🌏😂✌️
Even if there are alternative energy sources ☀️💨, must there be a complex machine wrapped in lots of plastic for every purpose, which you can't repair at all or at least not yourself? (And where you are subsequently dependent on the manufacturer or technician?)
Purpose: Rounding threaded rods, deburring metal parts, sanding wood, also perfect for my children for their craft work. After a test phase, there will be an upgrade of this prototype, which will certainly be less wobbly.
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Thank you and all the best! ❤️
Mela