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Re: Edmund Parabolic Reflectors

Subject: Re: Edmund Parabolic Reflectors
From: Gregory Kunkel <>
Date: Sun, 1 Aug 2004 18:59:33 -0700 (PDT)
  The 24" parabola has a 1.5" hole. You could reduce the size of the
hole to 1.3", the diameter of 1" pipe threads by using a flexible
grommet available from a supplier such as Digikey. A more economical
grommet that I have used is a piece of 3/8" OD  X 1/4" ID vinyl
tubing split lengthwise. It works and replaces the rubber washers
shown in my diagram.

               Greg Kunkel
--- Mike Feldman <> wrote:

> On 01 Aug, 2004, at 11:28 AM, Dave J wrote:
> > Anyone use these reflectors?
> >
> I've got a 24" dish sitting in my "to-do" pile.  Last time I was at
> the
> hardware store I looked for PVC fittings that would fit the hole,
> but
> they were all too big or too small.  Looks like Greg made some
> washers
> as shock mount, but perhaps they help with loose fit as well.
> -- Mike
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