[C320-list] Polycarbonate Companion Way Hatch Material Cost

[Bill Allen]

   

     Hi guys,

   Found this on ebay:

   <s-l400.jpg>
   [1]Tinted Smoked Lexan Sheet Solar Gray color #7130 Polycarbonate 1/2"
   x 48" x 36"
   [2]ebay.com

   Looks like about $275 once you include freight.  Might be more freight
   depending on where you are (my freight estimate tracks to Michigan).
   Plus, they include cutting to size.

   Might be worth a look?

   Bill Allen

   Pegasus #536 1998

   Sent from my iPhone

     On Oct 29, 2024, at 5:19 PM, Jack Brennan via C320-list
     <c320-list at lists.catalina320.com> wrote:

   Hi Jeffrey:
   The only problem with that quote is you need at least 27.5 inches on
   depth. Less than that allows rain into the cabin.
   So now the next step up appears to be 48 x 96, unless you can find
   someone to cut you a partial sheet. That's times four plus bulk
   shipping.
   I still think acrylic was a design mistake because it let's in too much
   light and heat in warm weather.
   Probably, it was an overreaction to the older, cave-like sailboats.
   Jack Brennan
   Sonas 1998 Catalina 320
   Tierra Verde, Fl.
   Sent via the Samsung Galaxy A32 5G, an AT&T 5G smartphone
   -------- Original message --------
   From: Jeffrey Kapec via C320-list <c320-list at lists.catalina320.com>
   Date: 10/29/24 5:08 PM (GMT-05:00)
   To: c320-list at lists.catalina320.com
   Cc: Jeffrey Kapec <jkapec at tkdg.com>
   Subject: [C320-list] Polycarbonate Companion Way Hatch Material Cost
   There is a sound engineering reason why Catalina Marine engineers
   choose
   the materials they specify for their finely produced yachts.  That is
   the
   reason Catalina vessels last so long and perform so long.
   Polycarbonate
   also has adequate UV protection.  My companionway Hatch cover is over
   20
   years old, no crazing
   As I noted previously I work as an Industrial Designer designing
   products
   so I have engaged using many materials.  Purchasing plastic sheets can
   be
   done through McMaster Carr, which I use all the time when I want
   something
   really quick, anything at all.  But I know that McMaster does sell
   everything *at a premium* because they carry so much inventory. of just
   about everything
   That being said I went to Boedeker Plastics which we use when we buy
   sheet
   acrylic , polycarbonate, ABS, etc.. etc stock for prototype building.
   here is the quote I got for the same material:
   POLYCARBONATE LT GRAY 7130 SHEET .500
   External
   Inbox
   Search for all messages with label Inbox
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   Nick Periman <nickp at boedeker.com>
   4:43 PM (0 minutes ago)
   to me
   POLYCARBONATE LT GRAY 7130 SHEET .500 X 24 X 48” - $140.90
   In stock
   --As far as aircraft canopies here is a reality reference from a  group
   chat of aircraft engineers:  The canopies on the McDonnell Douglas (now
   Boeing) F-15A, B, C, and D fighters are made of Lexan, a type of
   polycarbonate (i.e., thermoplastic resin). I would imagine that the
   F-15E
   Strike Eagle uses Lexan, too.
   General Aviation (GA) light aircraft (C-172, C-150, Beechcraft Bonaza
   G36,
   etc.) use optical quality acrylic windshields. Acrylic is prized for
   its
   light weight.
   There is an FAA bird strike test requirement on acrylic GA windshields.
   I
   don't know what the parameters of the test are other than to say it
   involves launching 8 lb. bird carcasses at the windshield.
   Regards,
   RTFM
   *Support the U.S. Space Program. "No bucks, no Buck Rogers."*
   <http://www.nasa.gov/>
   https://www.watchuseek.com/threads/ot-question-what-are-aircraft-window
   s-made-of.407492/
   *Cheers*
   *Jeff Kapec*
   *Petite Suite  718*
   Jeffrey Kapec
   *Tanaka Kapec Design Group*
   11 Brookfield St.   Norwalk, CT 06851
   203.846.3666
   www.tkdg.com<http://www.tkdg.com>

References

   Visible links:
   1. https://www.ebay.com/itm/175906001798
   2. https://www.ebay.com/itm/175906001798

   Hidden links:
   4. https://www.ebay.com/itm/175906001798