Note toe puff & counter experiment:
I used my personally developed technique for making the counter and toe puff. I have been experimenting with Gorilla glue. with the common shoulder leather typically used for reinforcement I soak it for 15 min and then coat both sides with Gorilla glue using a credit-card squeegee, forcing the glue in and leaving just a little sheen on top. You MUST wear gloves and work on a slick plastic surface that can be thrown away or cleaned. Gorilla glue is a strange form of moisture reactive adhesive that expands while it hardens, it is beautiful for leather except that it can be a terrible mess, I don't recommend playing around with any thing but practice pieces until you see all of the concerns for yourself. However it does make a perfect reinforcement; it is stiff when hard and allows the use of very thin reinforcement leather. It is kind of like a moldable plastic.