「robert」の記事一覧
1941 A DIY Fresnel Lens From Tube
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1800 Super Easy Coil Winding – Serpentine Coils For DIY Generators
1796 Building The Generator Of The Future – A DIY Axial Flux Generator
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1781 Keeping Warm In Winter A DIY USB Warmer
1700 An Awesome DIY Multi Fuel Heater
