If you do not have an access to a banding machine, you can just set a sturdy wooden board (plywood) on top of the stack of foam and then add significant weight (cinder or blocks). Keep adding weight until you can see that the materials are tightly compressed. The last step in making a foam archery target is to bind the board and weights to the target using a strong rope. Tighten the rope and secure it. You can use a heavy duty tape (duct tape) to ensure that the rope is secured in place. Your finished target should be at least two feet thick.
Article Source: http://EzineArticles.com/?expert=Etan_Calvert