Too start with: Sorry for my English.. but its not that good!

I have a question.. maybe it's just some thing stupid..

But i have made some in Inkscape and i try to cut it with my plotter but some shapes will be cut double..
I really don't know how that is possible because it cuts text just ones..

I hope some one here can help me !

Ok, so it's not just a plotter, but also a cutter?

Can you show us the file where it cut the lines double?

If you used Path menu > Trace Bitmap to convert a raster image to vector, that will explain the double lines.

Or for some cutter/plotters, it seems like I've heard that the paths must have a particular width. If they don't have that special width, they will be cut twice. I could be wrong about that. But maybe a good idea to check on the manual for your new machine