thanks everone for the comments, thing about spirals is 1 the blade holder has to br reallllllly tightened. and the break more then reg blades, we went thru 10 blades just thank God that a guy that was selling stuff across from me saturday gave me a pack of spiral (ryobi) blades, lol he mustve thought i would use them soon.. next big sign i make, will quote a price plus the price for blades. the couple picked up order, pic below