In message , Ian
Stirling writes
Take a coil of hosepipe.
Place in a pan of water.
Place the pan in the freezer.
Wait n hours.
Now, if you don't blow air too fast through the hose, it'll come out with
very little moisture in.

Ah good idea, I was thinking bucket of water & ice cubes, but of I've
got one of those coiled air lines, put that in a bucket / large pan of
water and freeze the lot solid. Splendid idea.

--
steve