Hmmmm...lining the drones with brass (or copper) tubing stock...sounds like an expedient alternative. And one of those companies that makes the tubing is here in Chicago (K&S). As I think of it, one of the nicest things about my PVC D flute from Doug Tipple (and I recommend his stuff...suh-weet flute!) is that it's PVC with a copper tubing joint. I'm dealing with about a 5/32 diameter on the drones so I'd have to drill them out and figure out which size has the 5/32 inner diameter.

And as to Atlanta, I pretty much decided that I'm goint to fly out there and rent a car for the Stone Mountain Highland Games...too many of you guys showing up for that and I want to be around to make sure that you're not having TOO good of a time. Hopefully, I'd have these puppies sorted out by then...let's see them get though the metal detector with the brass tubing inserts. TSA guy: "What the hell is this?"

Best

AA