When engraving an image, if my “line interval” goes below 0.005, the image won’t engrave. If I use just a box with fill, then the it will engrave. Just trying to understand why my bmp won’t?
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It’s always wise to give units, mm, inches, cm whatever. One of the documents I have specifies head speeds in inches per second.
There are numerous physical limitations that you will bump into. An interval of 0.005 results in a dpi of 5080. This is way beyond the capability of most hobby lasers.
My co2 has a spot size between 0.10mm and 0.20mm, so my useful interval is limited to 254 dpi or 127 dpi.
Generally an led diode laser has a spot size around 0.08mm, a dpi of around 318.
If you use a 0.005mm interval the beam or spot will cover the same area 16 times (0.08 / 0.005).
We know what you know what you mean, but we have no idea of what won’t engrave means. Does it not lase? What is it doing? I’d think it’d be rather burnt.
Suggest you watch this video by Laser Everything on photo engraving. Explains interval very well and will help you for the rest of your lasing prospects. Although done on a Fiber, the procedure works for any laser with any material.
Hope this makes sense?
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0.005 mm, I should have stated that. As for “image wont engrave”, again I should have been more clear. I have it set to play a sound when the engraving is done. So when I hit the start button, I immediately get the “done engraving” sound.
Check it out in the Preview and see what it does.
If you run that line interval, it will generate tons of gcode and make for a very long job time.
I don’t know what it’s doing.
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Device and controller, please? Is this an EZCad3 control board in this setup? 
Lightburn, Fiber 100w. It was a Ezcad 3 board but I had to downgrade as I didn’t have a license dongle.
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