Big letters for sign.
I brought and svg file and and ai file from home - with the same vector image.
The svg file made in Inkscape did not work - because the font I used was not on the FabLab computer!!
The file made in Illustrator looked perfect, but had to be UNgrouped many times. I know from earlier on that grouped objects make a mess in the lasercutter!!
ALWAYS outline text for the lasercutter
always UNgroup ai files
TIP: if you choose everything on the scene and it shows 0.000 as the stroke thickness your object is probably grouped!
Keep UNgrouping until you see the stroke thickness you set when you made the file (0.02 mm)