hi tom, i too was inspired by your simple design, and actually guided a high school project based on your designe, the hope was that it will enable students to make low cost pcb in school. after the project(wich was a bit diffrent from yours and didnt works all that well duo to my lack of technical skills and experience(im 18) and other things) ended i decided to make a V2 wich is almost the same as yours, and it dose work well,i manged to see it do very presice things with a pencil. the problem is i cant find a right drill for making the pcb's,(im pretty sure thats it) i got this 8 pcs kit from drill bit city but the drill that dose the routing dose not have a pointed tip in the very end and there for dosn't penetrate the circuit until much pressure is applied but then it goes in way to deep, im guessing its the drill bit but id like to hear what you say, and maybe recommend me a drill or a set from drill bit city or anywhere else(take in account i live in Israel ) my main goal is PCB's although i already did some name engraving and it came out very well! 1 more thing... is there a way to use lazycam with kcam? and what do u think about mach3 it look way more complicated is it any better?