“image optimization”

[TTD (François Grandjacques)]

Yes, but if it’s a part of something I want to keep ? Like, for instance, in that logo, I can’t make a pochoir (stencil I think in english), so I’d like to cut the line that draws the face, to empty a part that so wouldn’t be cut: can I kind of redraw my vector image ?

[Rick (Technical Evangelist)]

If you want to have the face show, you need to use a closed shape inside the area you want filled. Read this to better understand how LightBurn uses boundaries to determine what to fill.

How do I invert (negate) a vector engraving?

If you want to invert a vector engraving (Fill layer) you need to add an outline to it. Think about what happens when you scan a circle, compared to the letter ‘O’. The inner ring of the O toggles the fill. If you add another shape (like a square) outside it, it negates the whole thing: [image] And a slightly different example, this time done by changing the outer line around the design to a ‘Line’, instead of leaving it as part of the Fill layer: [image] In the case above, the design alr…

To help in communication, you can type in your native language, and we can translate, or you can use Google Translate.

[LightBurn (Oz)]

If you can post that file (or at least that part of the file) we can have a look at it and suggest specific things. It’s hard to make specific suggestions without knowing what the actual issue is with the file.

[TTD (François Grandjacques)]

Thanks, I found the answer !

[TTD (François Grandjacques)]

Is there a vidéo or a tutorial to learn about Gcode ? I have no idea what that is.
Thanks !

[justginbg (Gary Rowlands)]

What was the answer please. I read the thread then, DONE which is cool but I’d like to know what actually was needed. Thanks in anticipation

Gary

[LightBurn (Oz)]

GCode is the set of instructions used by the controller to plot lines, set speed and power, and more. GRBL devices don’t support “all” GCode.

As a standard, it’s pretty loose - lots of devices arbitrarily assign different meanings to commands. For example, the G4 (dwell) command is specified in milliseconds on some devices and seconds on others, and some let you use either one. G0 on Marlin devices is treated no differently than G1.

G-code

[TTD (François Grandjacques)]

Thanks for your answer about G-code.
I’m very glad with the machine and I’m making several tests. If you are interested in my results, tell me.
I’m thinking about buying a new laser, 20w for my Ortur master 2.
I saw that, much less exepensive than the one from Ortur.
Do you think I should buy this one ?

5500mW Laser Module Laser Head 450nm Blue Lase for Laser Engraving Machine...

Thanks !