Hi go_lope. Sorry for the delayed reply. I haven't been on here much lately.
Unfortunately with Photobucket deciding to now charge $400 per year to host, all my images are gone. I'm really unhappy with their greed taking out so many informative threads.
The tub is a sheep watering trough, and the wood in the bottom of the tub and on the walls is cedar. The method of attachment is a trade secret
, but let's just say some sort of commercial grade adhesive/sealant was involved in the process.
On a side note, what is the preferred photo hosting site these days? I'd pay something reasonable like $29.95 for hosting, but $400 is highway robbery!