Nclonghunter, I saw that too. The thing is sometimes regulation gets understood by enforcement in unexpected ways. 'Sharp blades' could somehow imply iron in a lawyers mind. I once went to go put a fabric over a wood frame and the city came by and told me the word 'rigid' in the city code which I had read means a metal frame. So I put up a rickety metal frame from the general store and they were happy.