GL: Side curtains / Pledge

[John & Judy Gill]

Keith,

Yes, I am aware that some plastics are not affected by citric acids  
and or other solvents.  That is why I SPECIFICALLY stated that my  
recommendations pertained only to acrylics and polycarbonates (both  
manufactured by Rohm and Haas.

For you to state as a "chemist" that all plastics are unaffected by  
these acids and/or solvents is steering the boating public in the  
wrong direction in my opinion.

I even offered the R&H recommendation for a one percent solution of a  
dishwashing liquid (without lemon oil) and distilled water as an  
inexpensive cleaner ( one tsp to a pint of water).  What could be  
cheaper or more effective???

If you have minor scratches or abrasions, J-Wax Kit or Simonize paste  
wax works very well to fill in minor scratches or abrasions.

John

==================================


On Aug 2, 2007, at 7:49 AM, Keith wrote:

> John Gill wrote: "Sorry to say that your canvas guy is mistaken,
> particularly with
> regard to acrylics (Plexiglas and Lucite) or polycarbonates (Tuffak
> and Lexan).  Citric oils and acids will cause crazing - small
> internal fractures in most plastics.
>
> John Gill
> (a former writer of design and fabrication manuals for Rohm and Haas
> Company which invented Plexiglas acrylic)."
> _____________________________________
> I'm sure you understand that the clear side curtains are NOT any of  
> the
> above materials. They are made of plasticized PVC (poly vinyl  
> chloride) or
> "vinyl" for short. Myself and others have used lemon Pledge for  
> years, and
> it works great on those materials. No need to look for non-scented.
>
> Also, acids don't always cause crazing in most plastics... why does
> hydrofluoric acid come in plastic bottles? Because it'll dissolve  
> glass!
> Muriatic (hydrochloric) acid comes in plastic bottles as well. Many  
> other
> plastics are used specifically around acids because of their non- 
> reactive
> nature.
>
>
>
> Keith (chemist)
> _____
> Opportunities always look bigger going than coming.
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