On 8/18/2010 6:54 PM, Uno wrote:

So here's how it went down:

1) Refrain from using hot water for a half hour so that ducts won't be hot.
2) Duct tape up the back of this joint so it stays together for the next
5 minutes.
3) Use an 1-1/4 screw to make a penetration right on the knuckle. When
you get through the top, stop.
4) Use drill bit to prepare hole for screw.
5) Install screw.
6) Remove duct tape.
7) Thank the nice folks on usenet who helped me out here.

I think I'll foil tape it for good measure. Cheers,

ps I used a different screw for the fastening: a little, metal duct screw.
--
Uno