I just tried this with Paint.net and I think it will work. I just did it quick and dirty but with a little more care it should do the job. What I did was to save 2 screen shots of the CW piece. One with either the wood or none view and the 2nd one as the lithopane view
How do you achieve a lithopane view?
I started freehand routing in August of 2016
Got my first "new" A series machine in September of 2017
It has an A907 motor
I Use the Aftermarket Musclechuck