Which fan?

[JoeDeM]

Originally Posted by NMLinda

Thank you!

In reading this, air volume flow looks like one of the key design parameters, and, as you point out, extraction efficiency drops quickly with distance. This is one of the concerns I've had with lampworking applications of this idea where the duct opening is aimed underneath the flame. I'd be interested in your thoughts on proper orientation of this kind of extractor and whether there are any OSHA recommended air volume flow rates you know of for the kinds of fumes we deal with.

Linda

here's some more info, on how the end makes a difference.

[NMLinda]

Thank you! I appreciate you posting this

Linda

[Pia Kaven]

http://lampworketc.com/forums/showth...propane+piping here is the link to DeAnne's tutorial on piping the propane trough the wall into the building... In case you havent found it already.