Originally Posted by lamicron  I have chinese laser , used it for architectural models (1:500 Intl. airport from my city) details were fine, cutting also. I dont find the difference with an Epilog in the cutting issue, maybe in engraving (I have not compared it yet) if you set the parameters as exact as your needs you 'll get it. This machines uses the same universal cnc system, if you look at the stepmotors, in one turn they have about 20.000 microsteps, that means you can set at least 0.001 tolerance .... |
Which "chinese laser" are you using? With the Redsail machine, I try to cut a 1" circle, with all parameters set as advised and get .020" geometric deviation...every time. In other words, not a true circle by a long shot.
There is more to the precision of a CNC machine than the number of steps in a stepper motor. That is like saying that one can put a Porsche engine in a '77 Buick and expect it to drive the same way. It doesn't work that way.