@marc54 There are several methods, the easiest is to install the eggbot plugin which includes hatching.
Obviously this is an example to show the hatch but you would set the spacing to the laser spot size, say 0.2 and the result will then be filled like raster. This is what T2Laser Hatch does but you only want to fill one shape and not all so the built in method although easier won't work correctly.
@filiqqo I'm a little confused, if you using a DXF (vector) it wouldn't make sense to then fill it to create a image (raster). Why not use an image to begin with?
There's something wrong if you are getting variation in speed as Grbl supports look ahead motion planning.
E-mail the DXF to me and the original image if you have one and we will figure out the best way to achieve what you want. If you can send me a picture of the result you are getting that would help me understand if this is a hardware issue or something to do with your file.
@rlambert You can do the engraving as raster and then a multi-pass cut out for the outer path, but if you trace the entire image it will all be vector and get multiple passes. If you import it as a DXF you could use different colors for the engraving and cut but currently it doesn’t support multi-pass (but you can easily add multiple paths in the DXF for the same result).
@vijayanands T2Laser and my default Grbl 1.1e firmware is the best setup, you will get faster and smoother motion compared to the Eleks configuration and there are advanced features available like homing switches, real time overrides (laser power and feed rate), dynamic laser power and more.
@tucker298 Yes, plug and play. The boot loader should be pre-installed, the only Nano's I've purchased where this wasn't the case were the unsoldered bulk variety (but for less than $1 each I wasn't bothered).