Home made polymer concrete CNC mill test run in aluminium Part machined on the polymer concrete mill https://plus.google.com/photos/111567771221581189269/albums/5988486787793414705 Part machined on my other mill https://plus.google.com/photos/111567771221581189269/albums/5988487117673434401 Time lapse of the casting http://www.youtube.com/watch?v=P6bHKjlBNBA source