Homemade laser engraver

[Anthony1973]

Hi I'm in the process of making my own laser engraver out of some old scanners and printers which I found easy enough to do. The part I'm stuck on is what size laser diode to buy and what driver (Circuit board ) I would require to run it all I can find the stepper motor boads on ebay but nothing to drive the laser though my computer hope this makes sense and any help much appreciated thanks anthony

 

[Blarg King]

If you found a stepper motor controller for say a 3D printer with 3 axis of control perhaps you could use the axis for up/down movement to trigger the laser? I assume a laser engraver only needs up/down left/right movements.