I made a tabac stick myself this morning, and when I went to post some pics I saw this thread- so, I'll just post here!
I simply used a spoon to dig out the remaining 50% of a puck I"ve been using, rolled the soap into a basic cylinder shape, and crammed it into a spent MB tube without much regard to the stick. Then, I pressed quite hard for a while with my thumb all over the top and here are my results. The malleability of the Tabac made things pretty easy. Now, if this just WORKS like it should I'll be a happy fellow. Regards to all!
Dave
Well that certainly appears easier than grating the soap. Let us know how well it works!