Hello, we are currently testing a new product, on it there are groups of texts that needs to be engraved. We figured out that it’s much more efficient to engrave and prioritize filling groups.
However, once I click on preview, engraving goes way over the text - which prolongs time of engraving significantly. Attaching picture below:
What is wrong here? Before that, it tells me also that some shapes fer set to fill but were not closed - I guess I need to fix that part in Illustrator but still, it goes like this everywhere on the texts.
Also, second part of the question related to this… when I save DXF in adobe illustrator where I have certain things grouped, but in Lightburn they’re not grouped - is it possible to save it grouped from Illustrator in DXF anyway?
You are running a very large laser with relatively low acceleration at a fairly high speed. Those red areas show the overscan distance required to accelerate the laser head (on all the machinery) up to the correct engraving speed on one side of the engraved area, then decelerate to a stop on the other side before reversing direction and ramping up again.
Assuming the machine has a Ruida controller, then the controller sets the overscan distance based on its speed & acceleration settings. LightBurn simulates the controller’s calculation to show the overscan, but it uses default values that probably don’t match your machine. Go to Edit → Device Settings → Additional Settings and hit the Read from controller button to use the real values.
If that doesn’t trim things down, then watch the machine as it runs the job. Most likely, the actual overscan will match the calculated overscan: you’re watching a Physics 101 lab demonstration!
@ednisley has nailed the overscan question but thought I’d add to this part.
Not certain about the grouping behavior but one suggestion on file format. LightBurn can import AI files directly. Have you tried doing so without the conversion? Also, SVG is a more natural file conversion from AI rather than DXF. You may want to prioritize SVG over DXF if AI doesn’t work.
Wow! This is golden thank you very much for taking time to respond to my question. I really didn’t consider the fact that machine has to accelerate and decellarate and I thought problem is with my source file Thanks once again!
Thats great idea. We are used to using DXF, but I think for engraving and this we will use AI - let my try and see how it works out Thanks a lot for your idea!
Thanks once again!