<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>Hi All,</div><div>I am looking for the actual PVHO rules for Acrylic forming. I can find all the references to the rules but not the rules. I am planning to make a 5 inch thick 60 degree Hemispherical segment either from forming or from machining out of a thick slab. I prefer to form it because I will need an oven to heat treat it after anyways, but I don't want to form it without the rules.</div><div>Hank</div></div></body></html>