LOL too funny man! I do not ground the pipe to the machines. My last DC system had PVC and I did ground those. I have never had a static build-up, so I never ran grounds. Each drop has an electronic blast gate that turns the DC on when you open the gate. Those are metal and grounded, so they ground the line to the DC.
Yep. Some of the fights in the WWing forums over this subject would put the disappearing lofts debates to shame!