DJ Delorie wrote: > > I didn't feel much "suck" on the end of the tube with my finger, but > the first time I hooked it up and tested it I saw the glass bow in so > much I feared it would break! I just need to find out if I can run > the shop vac with low air flow for the 5.5 minutes it takes to do an > exposure. > > Sounds like you need a calibrated hole :) Just like a domestic vacuum cleaner, have a hole in the vacuum pipe to reduce the effective vacuum. Warren
Message
Re: vacuum hold-down for exposure box
2009-03-22 by warrenbrayshaw