I am presently making a very porous vessel at Pelham Hall, part of Morley College. It is a thurible or incense burner loosely based on the magnificent Fumerio that swings down the central aisle in the cathedral of Santiago de Compostela.
The word is Galician meaning the "emitter of smoke", it weighs 54 Kg and takes 4-5 men to swing it via a series of pulleys over the heads of the pilgrims. It is one of the reasons I'm setting out on this adventure - I want to see it!
My version is work in progress...
It will be 1m diameter sphere and when finished, will be suspended out in a woodland-glade somewhere...entitled "Censing Nature".
A labyrinth of sorts....