The School of YouTube is going to be your next stop. There are thousands of videos available to you. Just search on YouTube your questions and you will find a great education.
Just because some of us forget to hit the like button doesn't mean we don't follow the thread and learn a lot in the process. Please continue to post to it as you go along.
I hadn't thought about it. I may end up doing that, but I think I will be using paste wax on the horn body and the outside of the plug, so probably not necessary.
Getting closer. I need to buy some 3000 grit paper tomorrow. Then start on the plug.
I didn't bother gluing the 2000 grit to anything, just did it free hand.
I'm the same age. I hold the horn against my thigh to work on it.
I'm working through how to smooth the flats. I think fine sandpaper glued to a popsicle stick will be the best way to keep the corners sharp.
I have the other one in case that happens. I'm leery of cutting through, also. I have a cow horn around here somewhere that has a cut just a little too deep. Saved it incase I want to make a spoon or something.