[ RadSafe ] Restoration of plastic display covers on meters

[Jim Darrough]

My take on it is just replace the plastic with Lexan sheeting if you can.
Polycarbonate will be much more durable.

Regards, Jim Darrough

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Ted de Castro
Sent: Thursday, June 27, 2013 1:53 PM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Restoration of plastic display covers on meters

Yes there are plastic polishes that work quite well - I have one - but its
mil surplus --- so that won't do you any good.  BUT - like someone else said
if the headlight lens stuff is for plastic - it SHOULD work.  
ALSO - for those soft plastic windows in convertibles which ALWAYS get
messed up - the recommended polish is McGuire's - should be available at any
auto parts store.


On 6/27/2013 11:20 AM, M K wrote:
> Oh, one more thing....if you can, it's a good to support the rear of 
> the plastic while polishing it-particularly if the plastic is thin or 
> brittle, otherwise there is a risk of cracking the plastic.
>
> On Thu, Jun 27, 2013 at 2:17 PM, M K <ka2mce at gmail.com> wrote:
>
>> There are plastic polishes that work ok.
>> If the scratches are not TOO deep, plain toothpaste, mixed with a bit 
>> of water will work ok.
>> If the scratches are DEEP, then ultrafine abrasive paper can be used 
>> to remove them, then you will need to polish it to restore the clarity.
>> With patience, almost any plastic can be made to look good.
>> If you try to use any motorized tool to polish, it must be run at 
>> VERY low speeds-it you run it too high, the friction will start 
>> melting the surface of the plastic, which will make things worse.
>> The headlamp kits, if intended for plastic should be ok.
>>
>>
>> On Thu, Jun 27, 2013 at 1:50 PM, Robert J. Gunter, CHP < 
>> rjgunter at chpconsultants.com> wrote:
>>
>>> Greetings All,
>>>
>>>
>>>
>>> I have some meters with plastic coated displays that have been 
>>> scratched over the years to the point that it becomes hard to read 
>>> even though the display behind the plastic cover is fine.  We have 
>>> thought about using one of those headlight restoration products like
this one:
>>>
>>>
>>>
>>> http://www.tooltopia.com/presta-136816.aspx?utm_source=googlebase
>>> <
>>> http://www.tooltopia.com/presta-136816.aspx?utm_source=googlebase&ut
>>> m_mediu
>>>
>>> m=cse&utm_term=PST136816&utm_campaign=googlebase_18u&gclid=CMD4m8jlh
>>> LgCFVNo7 
>>> Aod0moA6A<http://www.tooltopia.com/presta-136816.aspx?utm_source=goo
>>> glebase&utm_medium=cse&utm_term=PST136816&utm_campaign=googlebase_18
>>> u&gclid=CMD4m8jlhLgCFVNo7Aod0moA6A>
>>> &utm_medium=cse&utm_term=PST136816&utm_campaign=googlebase_18u&gclid
>>> =CMD4m8j
>>> lhLgCFVNo7Aod0moA6A
>>>
>>>
>>>
>>> Has anyone done this to their instruments (like a 450P, E-600, or 
>>> Electra
>>> meter) and could share their experience?
>>>
>>>
>>>
>>> Other ideas??
>>>
>>>
>>>
>>> Thanks,
>>>
>>> Rob
>>>
>>>
>>>
>>>
>>>
>>> Robert J. Gunter, MSc, CHP
>>>
>>> CHP Consultants/CHP Dosimetry
>>>
>>> www.chpconsultants.com
>>>
>>> www.chpdosimetry.com
>>>
>>> Toll Free: (888) 766-4833
>>>
>>> Fax:  (866) 491-9913
>>>
>>> Cel:  (865) 387-0028
>>>
>>> rjgunter at chpconsultants.com
>>>
>>>
>>>
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>>
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