Thank you! Sometime the hardest part is learning what the problem is called so you can find the solution. After a found this articles it all made sense. Thanks for pointing me in the right direction.
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# Scanning Offset Adjustment
Modern lasers are capable of moving very fast, and with remarkable precision, however firing the beam still takes time. Some power supplies and tubes may respond in less than a millisecond, but many take longer.
At 100 mm/second, 254 dots per inch means your dots are 0.1mm in length, fitting 1000 of them in 100mm. At 100 mm/sec, if your power supply and tube take 1 millisecond to fire, your engraving will be offset by a full dot width.
At 500 mm/second, that 1 millisecond delay means you'll be off by 5 dots, or 1/2 a millimeter. Still not very much, but visible. Many power supplies and tubes will take even longer to fire.
The result often looks like ghosted edges. The image below is a 20mm square at 1000 mm/sec, with a 1ms delay, resulting in a full mm of skew between scans:
LightBurn has a setting to counter this, called Scanning Offset Adjustment, in the [Device Settings](DeviceSettings.md):
show original
This helped me understand LINE SHIFT and INITIAL OFFSET which are the 2 adjustment under Scanning Offset Adjustment
Hi I was reading the links in the help files trying to set up scanning offset and run into a few questions no found in the help docs.
the image shown for device settings has changed (the columns are now “line shift” and" initial offset") could we get an update on that to better describe what we should use each column for?
when I measured the offset and input the numbers the issue got exponentially worse. Should I be using negative numbers or do I just guess random numbers?
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