The big cyclone I use the 10 mm rods on Y axis and 8mm on X axis table is 300 x 500 mm X rods 430 , Y rods 500 travel range Y 300 X 240 Z 45 http://youtu.be/kXMlxgN2MoM http://youtu.be/X5_7IKoARFU more information of project is on https://groups.google.com/forum/#!forum/cyclone-pcb-factory simle pages about project : http://www.cyclonecnc.4fan.cz/spindle is 300w ER11 52mm no make the X travel range than 250 mm