[General] lexan scratches

[Jacob Chancery]

Or transparent aluminum...

Sorry, couldn't resist.


On Fri, Oct 18, 2013 at 2:49 PM, James Fluhler <j.fluhler at gmail.com> wrote:

> 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.
>
> Of course you can always go with glass.
>
> James F.
>
> On Oct 18, 2013, at 2:38 PM, Cameron Kellough <
> cameron.kellough at knology.net> wrote:
>
> David,
>
> 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.
>
> 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
> as long as no liquid solvent contacts the material that it will be alright.
>
> On 10/18/2013 02:28 PM, Justin Richards wrote:
>
> 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"
>
>  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).
>
>
> On Fri, Oct 18, 2013 at 2:21 PM, Erik Arendall <earendall at gmail.com>wrote:
>
>> If you are using it as a guard or something you can buy a clear masking
>> film from 3M that protects from scratches.
>>  On Oct 18, 2013 2:19 PM, "Cameron Kellough" <
>> cameron.kellough at knology.net> wrote:
>>
>>> On 10/18/2013 01:46 PM, David wrote:
>>> > You guys know of a way to get the scratches out of Lexan, hopefully
>>> without having to replace it?
>>> >
>>> > Thanks,
>>> > David Merchant
>>> >
>>> It can be solvent vapor polished with dichloromethane.
>>>
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>
>
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>
> <vapour polishing0001.pdf>
>
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