Good evening all, with all the talk of hop stoppers-stainless screens and such.Could one fabricate on out of good clean copper window screen material ? I'm at a loss for stainless screen,tubing and fittings but have endless access to copper-Which by the way-Is copper ok to have in the brew keggle (I mean for the entire boil ?)I only need a 6-8 inch run from thru-wall to center of keg-a copper hopstopper would be real easy for me.Lookin' to brew on Thursday.... Thoughts anyone ?? Thanks in advance.Shane