Jim is spot on about the heat polishing. Crazes every time after a year or so depending in the amount if heat applied.
All the windows I have done have been 1/4" or 3/8" and 1/2" for hatches. Cast bronze acrylic seems to work best and Lexan has always fared poorly with uv and mechanical damage. Rich Knowles Indigo. LF38 Halifax On 2012-12-19, at 18:27, "Bill Coleman" <colt...@verizon.net> wrote: I discovered a few years ago that GE had a UV Grade of Lexan, but I never was able to find any. I am less than impressed with Lexan’s longevity as far as clarity. Bill Coleman C&C 39 <image001.gif> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Frederick G Street Sent: Wednesday, December 19, 2012 12:29 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List 37+ Windows Jim -- I had always heard that Lexan (polycarbonate) was generally much less resistant to UV exposure than Plexiglas (acrylic); has that improved in recent years? Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( On Dec 19, 2012, at 11:06 AM, Jim Watts <paradigmat...@gmail.com> wrote: Just as a FYI, flame polishing will shorten the life of your windows since it stresses the material and starts micro-crazing at the edges. My choice for material would be bronze 3/8" cast acrylic or Lexan. Lexan is more flexible, stronger (and about 30% more expensive) but scratches more easily. _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
_______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
