Claudio Prezzi

When I use a 4000x3000 pixel picture and 0.1mm laser diameter (which equals to 400x300mm), it renders to 100% in about 90s and then I get a white screen hangup....

That picture is only 1024x684 pixel. Is that correct or was it scaled by the forum upload?

My PC is an i7 with 24GB RAM and Win10/64.

This will mainly be implemented in jog and comms.

Probably you can add a pvc roll mechanism to cover the bottom spindle from dust. :)

Drag & Drop was never implemented, and because the frontend is basically a webbrowser, the default behavior to dropping is changing the url to the dropped file. I will check...

Also, if scaling something, it should stay at the lower left edge and not scale around the center. Or even better, use the defined corner from settings as anchor point.

This sounds like a problem with your firmware configuration. On GRBL the default PWM range is 0-1000, which means 1 is 0.1%. What firmware are you using?

On Arduino Uno or Nano, the real PWM values are only 8 bit (0-255). Because of memory and speed limition, grbl internally operates with integer value, not floating point. S...

I would take b). If "show machine" is disabled, zoom to the configured machine size with actual work origin at bottom left.