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Plexiglass Scratch Repair...

 
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Matt Dralle
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Joined: 08 Nov 2005
Posts: 26321
Location: Livermore CA USA

PostPosted: Thu Nov 20, 2008 9:26 pm    Post subject: Plexiglass Scratch Repair... Reply with quote

Dear Listers,

During the fitting of the Plexiglass canopy on my RV-8, I managed to put some pretty disheartening scratches in the windscreen section. You can see from the pictures that they looked pretty bad. A call to Van's revealed that a replacement canopy would be $640 + $250 shipping to California! Ack.

So what to do... A bit of surfing and I found this "Scratch Off" windshield repair kit for $35 on the Aircraft Spruce web site:

http://www.aircraftspruce.com/catalog/cspages/scratchoff.php

Frankly, it just seemed too good to be true. Nothing for $35 could be that "magic" I thought, but what did I have to lose at this point....

Well, the kit arrived yesterday and I decided to give it a try tonight. In a word: WOW! In about 2 hours the windscreen looked as good as new - no kidding - AS GOOD AS NEW! The pictures really don't do the repair justice. It looks better in person.

There are basically two sponges in the kit with four decreasingly porous pastes. You just put some of the first paste on the sponge and buff it in with a drill at 1200 RPM or less. Then you wash everything down good including the sponge and windshield with warm water. Then you use the next finer paste and repeat the process. Etc, etc, until you've used the 4th paste that is kind of like car wax.

Frankly, the scratches were gone after the first application of paste - I started at #2 based on the instructions and the "observed severity" of the scratch depth.

So, the bottom line is, if you've got scuffs or mild scratches in your Plexiglass buy this repair kit. It works!

Matt Dralle
RV-8 #82880


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Michel



Joined: 10 Jan 2006
Posts: 966
Location: Norway

PostPosted: Fri Nov 21, 2008 4:07 am    Post subject: Plexiglass Scratch Repair... Reply with quote

Quote:
From: Matt Dralle [dralle(at)matronics.com]
So, the bottom line is, if you've got scuffs or mild scratches in your Plexiglass buy
this repair kit. It works!

Well ... in 1975-76, I worked with a two-seater mini submarine at the bottom of the North Sea for the offshore oil industry. We has a big Plexiglas dome that often got scratches from various things we bumped into as we were working.
As part of the maintenance crew, I had to removed them almost daily. Something we did first with fine sand paper then we finished the job to a nice smooth surface with ... tooth paste! No special brand; any one has enough rubbing compound to do the job.

Don't try it on Lexan, though; I did and it doesn't work.

Cheers,
Michel Verheughe
Norway
Kitfox 3 - Jabiru 2200 ... grounded
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PostPosted: Fri Nov 21, 2008 4:25 am    Post subject: Plexiglass Scratch Repair... Reply with quote

Good one Matt. I always wondered if that stuff really worked. My LP
windows on my S5 (doors and windshield) are over 8 years old and are getting
to the point they could use a good polish.
Thanks for sharing,
Deke Morisse
Mikado Michigan
S5/Subaru/CAP 402+ TT
"The aim of an argument or discussion should not be victory, but progress."
- Joseph Joubert
do not archive

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