"Bob La Londe" fired this volley in news:nvvvm0$at8$1
@dont-email.me:


They actually have some rated for metal chips that sells for $9/foot in
small qty. I may try a 25' spool of that.

We use the static-dissipative sort (which is a 'must' for us, considering
what it is we collect!). It is MUCH stiffer and heavier, and much more
expensive than metal-chip hose.

For the most part, heavy-duty duct hoses are pretty smooth-walled.
There's still some texture in there, but not much -- usually a neoprene
material with fabric reinforcement.

And they come in 'standard' i.d.s, so fitting them up to a standard
vacuum isn't much of a deal.

Lloyd