Hi - I have been researching CNC foam cutting machines for a few weeks now and have got myself totally lost !! I want to build a 4 axis machine to cut R/C aircraft wings. I would like to build something that offers enough precision to be able to cut wing spar tubes in the middle of the wing profile. I have bought the MDf timber plans to build a simple 4 axis machine but I am now not happy with the drawer sliders and would like to try and either design up a solution for myself or buy a kit / plans. Any help appreciated.