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Re: Edmund Parabolic Reflectors

Subject: Re: Edmund Parabolic Reflectors
From: "Dave J" <>
Date: Fri, 06 Aug 2004 18:50:43 -0000
I never could get your .mov file to play but
I just got the dish from the UPS man and am
fairly pleased. 24" seems like a good size and
the dish is a nice thickness and has a rolled
outer edge for sturdiness. It easily ignited
the paper it was packed in when pointed at the
sun. It does ring when tapped so it will need
some sort of damping coating. First I need some
PVC pipe...

--- Mike Feldman <> wrote:
> [...]
> I take the dish resonance seriously.  For the Edmund 24 inch,
> it's "Doooooonnnnnnnngggggggg".
> When I get around to the auto-parts store and find some
> of the spray-on or paint-on sound deadening stuff for car
> panels that's not too expensive (like the plumbing supply
> stuff for putting on the bottom of stainless steel sinks
> and tubs) and that also makes an acceptable finish for
> exposure to hands and clothing and everything else, then
> I'll treat my dish and shoot another video clip
> to be the "after" mate to the posted "before" one.
> >>>
> >>>
> >>>So  you can see and hear the Edmond 24" parabolic
> >>>reflector unmodified out of the box.
> PS: that URL is not long for this world, so either grab
> a copy for your records, or watch the list for a new
> URL if you bother to bookmark it.
> -- Mike


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