Printer settings PLA:
210 degrees C
no heated bed
0.25 mm layers
shell thickness (normal, top and bottom surface) 4 layers
80% infill (except the "belt holder plates" print those with 100% infill)
all speeds at 30 mm/s (except non printing and retraction speed at 60mm/s and the bottom layer at 20 mm/s)
brim 5 mm
extrusion ratio 100%
Printer settings ABS:
normal ABS settings with 100% infill
Post-printing: remove the brim and dril out the holes at the desired size (see the instructable)
Yet an other laser engraver?...
...sure it is! But I know how important it is to get your information from differend designs and angles of perspective, and so the things I show you, others mayby don't, and vice versa. Therefore I hope that with this project, along with all the others, I can make a contribution to your knowledge of laser engravers and inspires you to build one yourself.
I have made two engravers prior to this one: a "pocket laser engraver" made of 2 DVD players and a little laser (300mW or so) and a "quick, cheap and dirty laser engraver"' made of a scrap printer and a scrap flat bed scanner and a stronger laser (2W).
Now I own a 3D printer I decided to make a nicer one who is bigger (38x29 cm work area), accurate and has no play between the parts. And I think I succeeded in that.