SVGs from FlatCAM are imported incorrectly

[positron96]

Hello! I'm trying to laser burn a PCB layout prepared in FlatCAM, exported to SVG and imported into LaserGRBL (v3.7.1). While the PCB starts at 0,0 in FlatCAM (and in Inkscape if I open the SVG in it), in LaserGrbl it is offsetted by random amount along Y axis. See pictures:

flatcam:

inkscape:

LaserGrbl v3.7.1

Could you dig into the issue?

I'm also attaching the SVG, saved as TXT Gerber_BottomLayer.GBL_0.1000_iso_svg.svg.txt

[BeatSlayer]

I would bet that the scale operation it's the one causing troubles...

Can you try to do some operation in inkscape, like a simple ungroup, save the file and try it out?

[arkypita]

The issue is with the viewbox. If I copy-paste the drawing to a new inkscape file, and shape out paper size to drawing size all is handled well by lasergrbl.

Look like that LaserGRBL is not able to handle viewbox correctly. It's hard to fix because SVG routine is not a code written by me but copied from a public project and I have no idea of how to put hands on it.

[positron96]

Thank you for info! Anyway, I've figured out that FlatCAM has a GRBL_Laser g-code preprocessor that eliminates the need for LaserGRBL's ability to import SVGs.

[arkypita]

Good