I have the same notion since i had followed the EG thread for quite a long time. From my understanding there are many formulas and technical discussion which i say would be basically more scientific for people like me. I would plainly ask the Big minds on the EG thread to give the builders a simple and good approach formula & moulding techique which would be low cost & stonger than the regular castings, so one could easily try them on a small scale for their projects. The Pro's & cons can only be understood when you really make them. Ideas are welcome as i am about to complete my 10' x 5' cnc router project and could use them for building a small cnc turning center which was in my mind for along time now. Definately EG will replace steel castings in the comming years for machine building applications.