[General] lexan scratches

[Arthur]

I wish I could afford a large amount of that aluminum...

https://en.wikipedia.org/wiki/Sapphire


On Fri, Oct 18, 2013 at 3:58 PM, Jacob Chancery <jacob.chancery at gmail.com>wrote:

> 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.
>>>>
>>>> _______________________________________________
>>>> General mailing list
>>>> General at lists.makerslocal.org
>>>> http://lists.makerslocal.org/mailman/listinfo/general
>>>>
>>>
>>> _______________________________________________
>>> General mailing list
>>> General at lists.makerslocal.org
>>> http://lists.makerslocal.org/mailman/listinfo/general
>>>
>>
>>
>>
>> _______________________________________________
>> General mailing listGeneral at lists.makerslocal.orghttp://lists.makerslocal.org/mailman/listinfo/general
>>
>>
>> <vapour polishing0001.pdf>
>>
>> _______________________________________________
>> General mailing list
>> General at lists.makerslocal.org
>> http://lists.makerslocal.org/mailman/listinfo/general
>>
>>
>> _______________________________________________
>> General mailing list
>> General at lists.makerslocal.org
>> http://lists.makerslocal.org/mailman/listinfo/general
>>
>
>
> _______________________________________________
> General mailing list
> General at lists.makerslocal.org
> http://lists.makerslocal.org/mailman/listinfo/general
>



-- 
Sincerely,
Arthur Moore
(256) 277-1001
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.makerslocal.org/pipermail/general/attachments/20131018/d6a85368/attachment.html>