Many times the problem isn't with the materials it's in the setup. First off, make sure you have the right hammer. Use a medium size claw hammer; not the tiny one from your boy's
http://www.ehow.com/how_4752116_poundnailwood.ht...

There are 225 2d roofing nails in a pound. If you need something longer like 1.75 inches that would be a five penny (5d) and there are only 145 in a pound.
http://wiki.answers.com/Q/Quantity+of+roofing+nail...

There are approx 187 nails per pound.
http://www.chacha.com/question/howmanyroofingna...

A is asking you to subtract the pounds he was charged minus the pounds he was sold. (5 and 1/3 minus 4 and 5/6) Find the least common denominator, which is 6. 5 and 2/6 minus 4 and
http://answers.yahoo.com/question/index?qid=201209...
