Guys in inkscape is there a tool like the virtual segment delete?
Without telling us what you are trying to do your question is open ended. Watching YouTube videos and reading a short tutorial website suggested to me that union would work. Other than that I can’t really make any suggestions. For inkscape ideas you might look up Nick Saporito on YouTube. He is a graphics designer, I think, that posts a few videos a week using either inkscape or gimp. Nothing is laser cutting/etching specific, but, I believe his clips might help you make good use of inkscape.