Thanks for the input, sirs. I am going to give this a try.
Regarding selecting based on different burning and cake forming qualities; I am of the opinion that the tobacco world and blends do not always follow the logic of the whole being the sum of its parts.
beastkhk, My thinking is as follows:
1. Red Cake has a high sugar content and makes a great caking tobacco. This tobacco, however, seems to be a finicky burner when smoked as the sole leaf, and the effort to keep it lit sometimes makes for a hot pipe.
2. X10 is an easy burner and, despite the lower sugar content, seems to be a decent cake-builder.
3. Five Brothers is also easy burning. The main reason I selected it for this blend, though, is that its fine cut makes Five Brothers especially good at forming protective cake in bowls with heat fissures.
4. Old Dark Fired Ready Rubbed was chosen because of its low moisture content, easy packing nature, and slow burning speed.
5. All of these tobaccos have flavors I enjoy, which is important in a blend to be used for the tedious task of breaking in a briar.
I'm not using a food processor, but I wouldn't rule it out.
mso489, I am mostly turning to a food processor because Five Brothers is (as I know you know) clumpy and thus makes a frustrating task out of hand mixing a decent sized batch.