Grain-matched control cavity covers

I've admired the guitars with control-cavity covers that are cut from the back of the body blank so the grain matches the back of the body (usually secured with rare-earth magnets).
Since I'm working on a chambered body, with both the front and back being "caps" on the center portion to be band-sawed for the chambering, I'm wondering if I could give this a shot.
It would seem that I could simply use a very fine blade in my scroll saw to cut these out of the back cap. The question would be then, what is a good technique for providing a "ledge" on which these covers will rest? I can think of a number of methods (some of them pretty janky!
) but so many have done this, I'm sure there are some tried-and-true methods. I did a search for this, but didn't seem to get any useful hits.
Would appreciate any pointers to threads, videos or other resources to help me figure this out.
Thanks!
Since I'm working on a chambered body, with both the front and back being "caps" on the center portion to be band-sawed for the chambering, I'm wondering if I could give this a shot.
It would seem that I could simply use a very fine blade in my scroll saw to cut these out of the back cap. The question would be then, what is a good technique for providing a "ledge" on which these covers will rest? I can think of a number of methods (some of them pretty janky!

Would appreciate any pointers to threads, videos or other resources to help me figure this out.
Thanks!