CNC with servos-is it even possible?

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hi guys, might utter nonsense, think, in theory, possible servo rig high power laser , let laser cut into, say, wood? mean, rig shown here: http://www.youtube.com/watch?v=fyfror6cvti&feature=player_embedded also, although sort of know answer following question, urge ask hard resist: think dvd burning laser trick? because i've seen dvd laser cutting balsa. , if so, need fancy adjustable optics? if possible, i'm gonna make myself cute pocket cnc ^^. answers!

if have rotating laser close sheet-goods being cut have problems cutting @ angle.  if have far away have problems resolution: hobby servos have 1,000 steps on each axis.


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