"The whole is more than the sum of its parts."
Here is another animation how you can make a mold of a heel ring with MSC
Yet another animation how you can make a mold of a ring with MSC
Below are a couple of detailed and richly illustrated descriptions of how to cast a ring and a heel ring with the MSC method, which you can check out and download if you want!
(expected to arrive around the turn of the month October-November 2021)