[ RadSafe ] Restoration of plastic display covers on meters

Thu Jun 27 23:09:31 CDT 2013

If you are just trying to make the display readable again, clean/sand the plastic cover using successively fine grits until yo get down to approximately 600 grit. You can then mask and spray the cover with some clear urethane from a spray can. The can should cost no more than 4 or 5 dollars. If you have not done this type of work before,  I recommend you practice with some scrap clear plastic sheet to see if you like the results.

Good luck,

Jeff Kulp

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu on behalf of M K
Sent: Thu 6/27/2013 5:57 PM
To: James.Darrough at oregonstate.edu; The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Restoration of plastic display covers on meters

if it's a simple sheet, that's ok, but often the parts are custom.

On Thu, Jun 27, 2013 at 5:03 PM, Jim Darrough <darrougj at onid.orst.edu>wrote:

> 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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