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And the other answers?
1. how much can I cut by a 500mW laser?
2. Can I cut a 3mm acrylic sheet?
3. What factors depend on the wavelength of the laser diode?

How big can I make with two NEMA17? Please help

That looks interesting, how much can I cut by a 500mW laser? Can I cut a 3mm acrylic sheet? What factors depend on the wavelength of the laser diode?

Maybe, I can push it for cutting small pieces of wood to make a bigger one. I have to start with a small one to make a big, right?

CO2 laser cost a lot, that I can't afford :-(

I am a complete newbie, I want to make a CNC for PCB making purposes, can I use these electronics
1. 2.6kg.cm Nema 17 stepper motor (CNC NEMA 17 Stepper Motor 5V 1 2A 2 Phase 4 Wire 2 6kg cm 1 8...