I took pictures of the repair process and wrote up a quick guide.
Hopefully someone will find it to be useful. The total cost was under
$4 and took about 30 minutes.
Here's the guide - http://www.paulstravelpictures.com/How-To-Fix-A-Leaking-Sink-Drain
Cheers,
Paul Michaels
Ft. Lauderdale, FL
Of course we know your objective is to drive people to your site and
test your camera work. The pictures look fine. It's your work that's
childish. Who needs to see a picture of your receipt for a plumbing
part? People who own a house should have things like Teflon tape on
hand for repairs. In my case I'd have the collar nut too. Since this
is a frugal group, I suggest that you don't need to cover the entire
area under the sink with napkins to check for leaks in the middle
under one pipe. I'd just use a pan.