SteveB wrote:

Anyone else ever done this? Venturiing is a good way to make suction
devices for all manner of applications, and they are really safe because
they just use air or water.

Yes, when I testet my vacuum pump. It sucked about 8m.
Here is a plan:
http://www.motor-manufaktur.de/werks.../en_index.html


HTH,
Nick
--
Motor Modelle // Engine Models
http://www.motor-manufaktur.de