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Re: PVC Pipe - Plastic Wrap Coating

Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>


Sand the PVC inside and outside.  Then wipe down with alcohol.  Avoid the
water and soap (may contain traces of a semiconductor --- bad at HV).

We have a PVC pipe mfgr in Madison, WI.  One day, as I was picking up a
pickup load of PVC, I noted a worker filling a cup that feeds the extrusion
die.  I asked him what it was.  He said it is a special type of grease that
aids the PVC extrusion process.

I took a sample home and tested it with a small handheld TC, and guess what?
It's conductive.  It leaves behind a "glossy" look on the surface of the
PVC.

Sand this off inside and outside before sealing.  It's only a small amount,
but why not spend the extra 5 min and do it right.


Dr. Resonance


----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, March 13, 2005 10:38 AM
Subject: Re: PVC Pipe - Plastic Wrap Coating


> Original poster: "david baehr" <dfb25@xxxxxxxxxxx>
>
>
> When I get my PVC pipe cut to size, I'll wash it with soap & water and let
> it dry for a few days,. I did notice even after a good soaking with
> water,within a minute of drying off with a clean cloth or paper towel, it
> produces a lot of static 'tricity, so is the pvc really absorbing that
much
> moisture?
>
>  >From: "Tesla list" <tesla@xxxxxxxxxx>
>  >To: tesla@xxxxxxxxxx
>  >Subject: Re: PVC Pipe - Plastic Wrap Coating
>  >Date: Sat, 12 Mar 2005 18:31:17 -0700
>  >
>  >Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>  >
>  >Hi Paul,
>  >
>  >>  I live in SC and it is extremely humid here in the summer. That
>  >>is why I am so concerned about sealing the PVC.
>  >
>  >I think it is going to snow here in CO since the humidity is getting
>  >"really high" like 30%!!  I don't worry much about humidity here...
>  >Have to judge what to do in your local...
>  >
>
>
>