Issues with making a simple model solid

[tweenulzeven]

Making a toolpathfile for lasercutting seems to be quite difficult in sketchup.
No experience myself but read about it here:

Polylines with real arcs for CNC Router?

Hello, my problem is as follows. I would like to send 2D shapes that have arcs for rounded corners to a CNC router for cutting. For simplicity imagine im using a single object whose shape is a square with 4 arcs making up the rounded corners. If i draw the rounded square in SU and make it into a group or component and then send it to a CAD/CAM software called Torchmate, then after applying a male toolpath i wind up with 8 different toolpaths - 4 for the edges and 4 for the corners, rather than…