Hello
I have a problem with the small fine engravings on Lightburn.
I had been using my usual software for years.
For 1 month, I have been using Lightburn and I find that the engraving of small elements such as text is messy, much less fine.
Here are 2 examples, the settings are exactly the same, the wood is the same, the visual is the same, nothing has been touched on the engraver.
Fill mode:
Max: 40
Minimum: 35
Speed: 600
Interval between the lines: 0.05
What is the usual software that you’re using? If this is on a Ruida I assume it’s RD Works but would like to confirm. The engraving characteristics make me question this though.
the LightBurn examples almost look out of focus. How is focus achieved on your laser? Is it the same for both LightBurn and your current software?
What is the source of the design? And are the textual elements paths, bitmaps, or retained as text in your designs?
Can you upload the designs in original format (you may need to change the file extension to .txt to do this) and .lbrn format for comparison?
Hello,
Yes my usual software is RD WORKS.
It is not about importing a file but text, therefore written directly on the software: these are paths.
That said, the result is the same when I import a png or bmp file.
Focus ? No idea, I didn’t touch anything (the engravings were made at the same time, 30 seconds apart), it’s done automatically by the machine when I turn it on.
So the machine adjusts for focus depending on material thickness automatically on machine start?
I ask because unless the photos are blurry the burns don’t have as crisp of an edge as I would expect.
In any case, I suspect @jkwilborn is correct that the core issue is related to offset scanning adjustment. You can confirm by burning a filled rectangle with bidirectional scanning and a larger line interval, something like 1 mm. If the edges of the burn are not aligned it could create the discrepancy you see.
Hello,
Here is a test with a rectangle 1cm high x 2cm wide.
Then the word test.
On the left, this is Lightburn, on the right this is RD workds.
Engraving done without modifying anything, same settings, same plate.
Can you increase the line interval (Intervalle entre les lignes) to something higher? Set to 1 or 2 mm instead of 0.1 mm as it is now. This will allow you to see if the lines going left to right and right to left match up.
That looks improved from LightBurn but not perfect. If you make the corrections for Offset Scanning Adjustment you may be able to improve on what you’re currently getting with RD Works.
I followed the tutorial in the link, I engraved the square 1mm apart, at several speeds.
But the line gaps are infirm, it’s impossible for me to measure, it’s not even 0.5 millimeters !
How am I supposed to fix this problem then ?
I’d suggest then doing a trial and error method. Make a small adjustment and do a visual confirmation to see how that adjustment affected the output. Adjust higher if inadequate or go back if you’ve gone too far. Once things look good visually then you’re good to go.
This is technical language
