John, my duct was all PVC flex and am gradually replacing with metal. The only reason for switching is to get better CFM as I'm upgrading a machine and it needs more suction. I've run with PVC for years with no static issues. The Rod Cole article is here http://www.woodcentral.com/articles/...cles_221.shtml as well as a lot of other websites
Thank you for the hose information. You said, " Like Jamie and Hoang, have never bothered with wire and never had an issue with static. I believe this is not an issue in small shops at least according to the article from Rod Cole".
Do you also have metal duct as they do?
And, can you tell me where the Rod Cole article can be found?