Thank you very much mattrsch!!!
You really helped me.
At this time I don't want to do raster engraving, so I will fine with Gecko, Cambam and Mach3.
I have a small CNC and I have a little experience on how to work with Mach3 and I hope to work and with Laser also but I must find which settings on Cambam is for Laser cutting.
Dear cvoinescu, thank you for the information.
I mentioned plastic as for the hardness.
The exact material which I use called "Vulcanized Fiber".
http://en.wikipedia.org/wiki/Vulcanized_fibreThis is the material on the video which I posted.
When you cut it with laser produces fumes but I don't know if these fumes are too bad for the optics, mechanical components and for my health.
I know that many other professionals cut and engrave this material with laser.