I was reading a plane polishing website the other day when I noticed it suggesting using the orbital tool (with the wool blanket) to remove swirls using F7 grade polish because it works better than Grade C polish.

This confuses me because I'm under the impression that the usual step is rotary tool with F7, then rotary with Grade C, THEN orbital tool with Grade S.

Is there a good reason to have the final step be an F7 with the orbital equipment?