How To Make A Agility Tunnel. Watch a video to see how to teach your dog to go through a tunnel. Cut the ends off of a large cardboard box to make a tunnel, or drape a blanket over a couple of kitchen chairs.
For each 4′ x 8 ft sheet of plywood, make 3′ x 8 ft by cutting it down with a table saw or circular saw. The climbing wall should be built from a frames. Moreover, cut the bottom circle and make sure that there are no sharp corners.