How many tables will a bolt and a 1/2 bolt cover? Where is a good place to purchase cloth at a good price? Thanks for any responses. Also, I have a Duofast staple gun, 1/2 inch crown. It works well but I have been wanting to switch to air staplers. Harbor Freight has 1/2 inch crown and 1/4 inch crown guns for $20 dollars. Does anyone have any experience with them? Are they any good and what type of psi tank should I be looking for?