I am wondering if the risk of lightning strikes make it necessary to ground a copper finial like you would a lightning rod.
I think the thing that makes the alarms ring, is that big plastic thing on clothes, games, and other ****. I don't think the cards will set up the alarm, but be careful, lots of cameras. When i was like 5, i stole this big-*** toy, i think it was a Lego castle, and the alarms didn't ring, and my mom didn't notice :)
I assume you are referring to compression joints
