Replies

1. 
   DennisS | Jan 12, 2005 07:37am | #1

   Dale -

   There are probably people here with more expertise on the subject than I have but .... it's my understanding that the grounding wire dissipates static electrical charges built up from the dust passing through the ductwork. So long as the main part of your system is grounded, I don't think the short lengths between the machine(s) and the ducting is a concern.

   ...........
   From Beautiful Skagit Co. Wa.
   Dennis
2. 
   nikkiwood | Jan 12, 2005 10:39am | #2

   This has been discussed here before, and I think Dennis is right. However, I too use this kind of system, and because I am a cautious guy, I opted to run a jumper around all the plastic fittings. It is certainly easy enough to do.

3. 
   bleubassplyr | Jan 12, 2005 05:09pm | #3

   CHeck out this link. There is a lot of info there. 

   http://billpentz.com//woodworking/cyclone/Index.cfm

   There are more old drunkards than old doctors.  Ben Franklin

1. 
   Woodspirit | Jan 13, 2005 07:14am | #4

   Thanks to all, this looks like a good site. Didn't mention that I did jumper the few plastic fitting that I do have so will carry on making sawdust.

   Cheers Dale

4. 
   Jellyrug | Jan 13, 2005 11:23pm | #5

   Dale,

   I use PVC pipes against the ceiling, with flex hoses only on the branch connections, because hose presents so much more resistance to air flow. I have no grounding anywhere and have never noticed any static build up.

1. 
   Woodspirit | Jan 14, 2005 02:05am | #6

   Good to know, thanks.

   Dale