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Glass, in this size, is much too heavy, not to mention fragile.
Also, the Lexan is curved rather severely. Consider it like a
motorcycle windshield that kinda wraps around you but is oh, about 3
feet high.<br>
<br>
<br>
<div class="moz-cite-prefix">James Fluhler wrote:<br>
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cite="mid:6D6C0FD6-1218-4775-902A-81B376279E24@gmail.com"
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<div>If you do replace it definitely add the 3M layer to protect
against future scratches! I've also heard of people dual
layering the lexan a thick sheet for protection and a thin
(cheaper) sacrificial sheet to take small hits and scratches. </div>
<div><br>
</div>
<div>Of course you can always go with glass.<br>
<br>
James F.</div>
<div><br>
On Oct 18, 2013, at 2:38 PM, Cameron Kellough <<a
moz-do-not-send="true"
href="mailto:cameron.kellough@knology.net">cameron.kellough@knology.net</a>>
wrote:<br>
<br>
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<div class="moz-cite-prefix">David,<br>
<br>
Solvent Vapor Polishing with Dichloromethane is directly
from the old GE (now Sabic) plastics fabrication handbook.
I saw it a long time ago in the GE Lexan Fabrication
handbook. The procedure has been removed from current
editions of the handbook due to the more stringent controls
on dichloromethane. I'm attaching the page from the old GE
plastics handbook that I had an engineer at Sabic dig up for
me.<br>
<br>
Justin may be right however that on a safety-critical part
there is risk however since it was originally a manufacturer
suggested technique, I'd guess<br>
as long as no liquid solvent contacts the material that it
will be alright.<br>
<br>
On 10/18/2013 02:28 PM, Justin Richards wrote:<br>
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cite="mid:CACQ9ThtJK3uUnpP8RH9ok__=kwv7w4Lc2sdOpb1pXP7tua9prw@mail.gmail.com"
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<div dir="ltr">I would be careful and trust the manufacturer
on this one. If the manufacturer says "this cannot be
polished" or "you cannot remove scratches from this" it
likely means "Don't try to polish or remove scratches from
this if you care about it being able to protect life or
property"
<div> <br>
</div>
<div>Vapor, flame, or abrasive polishing can possibly
degrade the material to a point where it will no longer
stand up to projectiles (whether they be rocks, bullets,
birds, etc), or cause the material to become brittle or
less UV resistant (which is important for windshields,
being outdoors and all).</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Fri, Oct 18, 2013 at 2:21 PM,
Erik Arendall <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:earendall@gmail.com" target="_blank">earendall@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<p dir="ltr">If you are using it as a guard or
something you can buy a clear masking film from 3M
that protects from scratches. </p>
<div class="HOEnZb">
<div class="h5">
<div class="gmail_quote">On Oct 18, 2013 2:19 PM,
"Cameron Kellough" <<a moz-do-not-send="true"
href="mailto:cameron.kellough@knology.net"
target="_blank">cameron.kellough@knology.net</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex"> On 10/18/2013 01:46
PM, David wrote:<br>
> You guys know of a way to get the
scratches out of Lexan, hopefully without
having to replace it?<br>
><br>
> Thanks,<br>
> David Merchant<br>
><br>
It can be solvent vapor polished with
dichloromethane.<br>
<br>
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<div><vapour polishing0001.pdf></div>
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<pre class="moz-signature" cols="72">--
Burnt slap out on commercials.
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