[TowerTalk] Polishing a plastic meter face to remove scratches?

Michael Tope W4EF at dellroy.com
Fri Nov 12 10:23:14 EST 2004


When I was in college, I worked for the physics department. We
were fabricating adiabatic light pipes out of acrylic. Before we
went to laser cutting, we would saw cut the acrylic, sand it, and
then use a paste loaded with alumina particles to polish the
edges to an optical finish. This was probably the same stuff
that Jim W6RMK was talking about for polishing aircraft
windshields. I think you could specify the particle size if you
wanted to polish in steps. Wish I could remember the
manufacturer (too many dead brain cells since then).

73 de Mike, W4EF....................................

----- Original Message -----
From: "Jim Lux" <jimlux at earthlink.net>
To: "Rick Stoneking" <w2rds at arrl.net>; "TowerTalk Reflector"
<towertalk at contesting.com>
Sent: Friday, November 12, 2004 6:51 AM
Subject: Re: [TowerTalk] Polishing a plastic meter face to remove scratches?


> There are products made for polishing aircraft windshields.  Nothing worse
> than landing into the sun with tiny scratches in the windshield. You could
> try mail order (e.g. Sporty's Pilot Shop, Aircraft Spruce, or equivalent)
or
> just go down to the local small airport and ask around.  Take your
> controller with you and you might get a free trial?
>
> Basically they're a fine grit in a paste.  (non-clear-gel)Toothpaste is
> reputed to work well, but I'd try it in an inconspicuous/noncritical
place.
>
> Do you know what kind of plastic the meter face is?
>
> ----- Original Message -----
> From: "Rick Stoneking" <w2rds at arrl.net>
> To: "TowerTalk Reflector" <towertalk at contesting.com>
> Sent: Friday, November 12, 2004 4:42 AM
> Subject: [TowerTalk] Polishing a plastic meter face to remove scratches?
>
>
> > Is there a way to remove scratches on a plastic meter face?  I have an
> older
> > rotator control box that was given to me and the direction meter has
heavy
> > scratching, making it very difficult to read.  Is there any way to
polish
> or
> > buff this so to eliminate or reduce the scratches?
> >
> > Thanks,
> > Rick
> > W2RDS
>
>
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>
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