That looks like a great Idea and looking forward to see how it comes out. although I will have to agree with using bolts or hose clamps to hold the pipes together. Good luck.
Done! It wasn't as easy for me as Mr Jerzy wrote in his article... but, at least I finished Later I'll post some photos... but now how I did it:
The cork bought by me was in so big parts... that I had to place it like a puzzle One by one... it took some time, but I'm glad it's over Parts of cork was fixed with very strong glue and foam... And tied until the foam was inflexible.
Very cool. I can imagine many orchids living on that. The link didn't open for me the first time but it did now. I see why you don't need bolts. Great Job