Hi,

I'm building a cnc router to cut shapes out of aluminum plate up to 1/2 inch thick. If I clamp the plate to my sacrificial mdf and use the cnc router to cut out a pattern that makes a complete circle, I presume I need to leave .005" all the way around the bottom to hold the part in place. I guess I could also make the program leave a few small attachment points to hold the part.

Also, will the parts peel away and clean up with an exacto or deburring tool if I leave .005".

Has anybody come up with other ways?

Thanks!!