I have started working with a JPT 5W UV Laser, and got it running with LB, and I’ve come across a weird headscratcher while trying to do sub-surface engraving on glass/crystal:
It seems that I can engrave under the surface properly with lines, but it will not fill. I had very similar settings in Fill and Line mode, and am perplexed as to why I only see the lines. Anyone here have any experience with this?
Note that filling works fine on the surface and on Stainless steel and wood and whatever else i’ve tried. In fact, when I did my test, I had an aluminum business card under it, and it engraved the fill on the card instead of inside the crystal.
My Setup:
Source= JPT seal-55-5SE
Controller=BSL
Galvo=Sino-Galvo RC 1001
LB Ver: LightBurn Pro 2.0.05
Computer: Mac Mini M4 2024.
OS: MacOS 15.1 (Sequoia)
Preview looks correct. I figure it’s probably drawing correctly since it works on other materials. I think it’s just somehow not getting the same energy density in fill mode as it does in line mode?
So the Lines engraved inside, and the Fill Sub-Layer went through the crystal engraved on the business card?
This is odd. I’m asuming, you didn’t change the focus. Can you confirm that?
Both the Fill and Line Sub-Layers appear to use the same intensity settings.
Does it make a difference if you create a new separate Layer in fill mode?
