I have had an issue with this logo and the letters in “High Shine”. All of the other text gets filled, but the larger text does not.
Light Burn File:
High shine.lbrn2 (98.4 KB)
Customer Logo:
Sample Image:
Sample Image:
From what I see on top ones nothing is filled.
Right, and I have it set to “fill”. I traced the image and removed all the unwanted lines and it still won’t fill those.
Is it doing this in raster like fill or is it tracing out like line mode? All your letters small and large look like line.
How was bottom one done?
I had them all as the same exact layer and all set to fill, my file may not reflect that as I was adjusting things. I’m using an omtech k40 by the way.
Preview shows as expected:
…However… the Cuts / Layers window shows an unbelievable speed is set for layer 21 and 20. Methinks once you get that sorted out, your results should improve.
Yes, preview displays the result I want, but it only outlines the bigger letters. Not sure why the speed is so high in your screenshot, on my file is 260-300 mm/sec of I recall correctly.
300 mm/sec = 18,000 mm/min
Looks reasonably well filled in this photo, as the interior of the larger text is different than the background:
Filled with a prominent outline:
The LightBurn file shows the larger text gets one pass at 20% and the smaller text gets two passes at 10%, which will certainly produce different results. However, those settings will not produce the outlines seen in the photos.
If it’s that machine, then the 300 mm/s speed setting may be pushing its abilities. Running a Material Test for engraving at speeds from 50 mm/s up through 300 mm/s and powers from 10% through 70% will identify the sweet spot for that material.
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That is much too fast for a 40w laser. Sweeping side to side, you can get some high speeds (but NOT what you programmed). Tracing the outlines means slower travel (no time to get up to a higher speed), so the outlines got a lot more power.
Also, your 318 LPI (.08mm interval) indicates you are overlapping your tracks, meaning a double burn. I hear a 0.1mm dot is considered good for a CO2 laser. This translates to a 254LPI setting.
I completely overlooked running a material test, I am new to lightburn. This suggestion worked. I found the sweet spot. Thank you!
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I am guessing the darker areas in the letters may be because the power is too high. I did lower the interval to 0.1 which helped.
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