Cut out both ends and cut a wood follower to fit the opening. Small red bricks can be wrapped in foil and used for weights. There are several good cheese presses available at a variety of prices. Anyone who is handy with wood can make their own. I have already tried them, and they don't work.
Cheese wax is softer and more flexible than the other types.
It comes in liquid or tablet and in vegetable or animal types. They all work equally well. The tablets keep on a shelf, but liquid rennet needs to be refrigerated. However, it does have a life expectancy of two to three years. It never really dies, but it does lose potency at about two percent a month.