I would like to engrave a triptych starting from an svg file resized to 420 x 891 mm (i.e. three A3 wooden panels to engrave)
How to delimit the engraving area to 420 x 297 mm on an SVG file, identical to what we can do on an image using “Apply mask to image”, without having the message “One or more shapes are crossing the edge of machine workspace”
Because SVG vectors import as LightBurn vectors, you want the Cut Shapes tool:
Chopping it into non-overlapping sections will prevent over-toasting the overlaps, which means you will find the Print and Cut tool useful to realign the sections on the platform:
You can (probably) use sharp points in your design as PnC targets:
You should be able to use boolean intersection. If you group your svg entities then make three copies of it you can perform three boolean intersections with your three A3 rectangles.