Andrew Gabriel wrote:

(snippage)

I have an old Hoover Constellation I use for this, and two hoses.

A couple of people have mentiond Constellations[1] recently which reminded
me: Did anyone see the news article a couple of weeks back? - The one about
the guy who'd just spent 8 years inventing a vacuum cleaner that hovers on a
cushion of air......

Alan


[1] An aunt had one in the sixties. Used to fascinate me when I was a kid)