I have a part with 4 large oval cutouts in the middle (200mm x 400mm).
It is being cut from aluminium sheet with a 2.5axis CNC router.
I designed the part on Solidworks and used CAMworks to Create the toolpath/cutfile.

I have no issues with making the toolpath for the perimeter, but everytime I try and make a toolpath for the 4x cutouts, it tries to machine them out completely starting in the centre of each cutout, thus removing all the material within the 4x ovals.

How can I set it to only cut the perimeter of the part, and the inner perimeter of the cutouts to not waste time and material?

There must be something so simple that I'm missing, I've done it before but completely forgot how.

Any help would be appreciated. And great forum, many hours of good reading here, thanks guys