Just layed it out to about the size I wanted and used my wire cutters to cut. I also use some good wire hubby had in the garage to attach the sides.
Fold over the ends so they overlap about two inches. Use your wire in three inch pieces to attach the sides.
I found it easiest to make a hook with my pieces of wire to fish it though the hardware cloth. Why they call it cloth I don't know as this stuff is tough and sharp. When I pulled them through I used the wire cutters to hold the wire and twist securely. Place these about every six inches down the roll.
There it is tucked behind a tree in the corner. I would love to make a big one out of a trash can to really cook the compost quickly. This method will be a little slower but I know the stuff that comes out of it is nutrient rich because whenever I would turn the pile the roots from the plants in the planter would be coming up into the pile reaching for all that good stuff.