I've been toying with various ideas on how best to extract dust while sanding on the lathe. I very much like the look of the Kirjes with extraction hose but budget does not allow at the moment. I've also looked at making a flexible/adjustable arm to hold the extraction hose in the right place.
I came up with an even simpler idea using some magnets left over from the relief valve:
Stick a metal disk to the tool rest arm:-
Attached a magnet to the a modified extraction hose
et voila
For bigger bowls the hose magnet will hold directly on the lathe bed.
Seems to provide a fair amount of flexibility and with the Camvac on full as much dust as can be expected is going up the hose.