Since i'm going to start experimenting with TC somewhere in the second half of this year [after I've moved into a bigger house], I'm already gathering information and I stumbled upon a nice PDF document explaining how to create your own Laminar Flow Hood.
People who'd like to try and build one of their own or people who're only interested can click here
"We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special." - Stephen Hawking