Thanks for this post. It is really informative, especially all of the information on the blanks, and the dyesub quality. I really think it would be a neat idea of someone was able to make a more comprehensive list of the blank manufacturers, and what the qualities of each of them are (ie, how thick they are, the different styles of stems, the tooling / sprue marks, etc.)
I’m not suggesting that you do this - just that it’s an interesting idea if anyone wants to tackle it.