It could also be the speed. How fast (or slow) did you try?by Mikk36 - Laser Cutter Working Group
Also, you should really use a PWM-input capable driver for the LED, that way you can easily reduce the output power of the laser in order to make focusing easier without touching the potentiometers each time. This also makes it possible to do raster-engraving (variable power, constant speed).by Mikk36 - Laser Cutter Working Group
This is how I do it (with 750 mm/min feedrate): Select gerber file, create non-copper regions geometry. Select the noncopper object And start clicking on the Generate button in the Paint Area section and then the white areas on the display on the right until every one I need is selected. After everything is generated, you select all the paint objects and join them from the edit menby Mikk36 - Laser Cutter Working Group
I immediately dropped the idea of just generating the isolation cuts, since it basically ignores all the spacing rules between the lines (ie, there's not much air between copper lines that way). So instead, I paint the non-copper areas. That way you eliminate a lot more paint from the board and making it easier for the etchant to reach the copper. As for the paint, I just bought a random matte blby Mikk36 - Laser Cutter Working Group
Well, in its simplest form, it's just a lot of glue and wood mixed together. And glue-dust really is bad for you.by Mikk36 - Laser Cutter Working Group