machine#construction: casting#materials: concrete ConcreteConcrete is sometimes used for the construction of giant machine tools but it may also be a suitable medium for the home-builder. Techniques for building machine tools from concrete were developed by the Germans during WWII when steel and iron were in short supply. more on this topic later Links: SN22BenchMill.pdf below http://groups.yahoo.com/group/Lathe_2000/files/ |