Chuck, OK for you, but for some unexplainable reason I like wood on my
boat, I like the teak interior and exterior parts, I like the jatoba extras
I have added on and I like the fact that C&C had marine carpenters do this
great work on my old boat...I find it very warm and I do need some activity
in my old age...keeping it looking good I mean

Dwight Veinot
C&C 35 MKII, *Alianna*
Head of St. Margaret's Bay, NS
[email protected]


On Mon, Feb 8, 2016 at 11:52 PM, Chuck S via CnC-List <[email protected]
> wrote:

> Agree with Martin.  I would replace any wet wood; plywood or teak or oak
> with a more modern, non organic solution.
> I like solid glass sheet products for wet locations and starboard or
> expanded PVC sheet for above deck stuff.  My logic is driven by the "Let's
> not ever have to do his again" approach.  I like to use balsa in coring the
> deck to keep it light, but other woods don't belong on a boat.
>
> Chuck
>
>
>
> ------------------------------
> *From: *"Martin DeYoung via CnC-List" <[email protected]>
> *To: *[email protected]
> *Cc: *"Martin DeYoung" <[email protected]>
> *Sent: *Monday, February 8, 2016 2:05:36 PM
>
> *Subject: *Re: Stus-List repairing large wet deck core areas
>
> When faced with similar decision regarding how to replace wet plywood I
> went with solid epoxy/glass cloth in the high load areas.  The area
> immediately around the mast is also full of fasteners (halyard blocks,
> cleats, etc.) so replacing a ply or balsa core with epoxy/glass should
> reduce the chance that a future owner will be faced with failed core even
> if a bolt hole leaks.  In less loaded areas I matched the original balsa
> but paid close attention to wetting the kerfs and edges with epoxy.  All
> the fastener holes will be over drilled and filled with epoxy.
>
>
>
> Calypso’s designers and builders (Bruckmann’s custom shop) called for
> plywood around the mast collar.  When I opened up that area the 44 year old
> plywood was very wet but only rotten in a few areas.  Owing to the high
> halyard and rig loads in the area I chose to replace the plywood with a
> lay-up of epoxy, bi-ax + mat, cloth, and epoxy board.  I tapered the solid
> epoxy/glass into the balsa cored area (also new balsa) outward until all
> the wet/failed core was replaced.
>
>
>
> As I have access to a supply of thin epoxy board I made up a pattern of
> the repair area and laid up two “U” shaped inserts that worked much like
> purchasing 3/8” thick epoxy board.  (For a visual, think a thinish toilet
> seat cut in half long ways.)  I custom shaped the inner and outer edges to
> the repair area (much like a dentist shapes a tooth for a crown).
>
>
>
> The full repair lay-up session took at least ½ gallon resin, 2 people, and
> 5 hours.  I used vacuum bag and mechanical means to hold the layers in
> place.  To gain the full replacement thickness it took 8 to 10 layers of
> 25+OZ bi-ax + mat along with my pre-fabbed insert.
>
>
>
> I do expect to hear some interesting pops and cracks the first time we
> fully power Calypso up under sail as the new epoxy/glass takes its first
> full load.  I also expect the hull/deck will feel stiffer than it has been
> in years.
>
>
>
> Martin DeYoung
>
> Calypso
>
> 1971 C&C 43
>
> Seattle
>
>
> [image: Description: Description: cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F]
>
>
>
> *From:* CnC-List [mailto:[email protected]] *On Behalf Of *Petar
> Horvatic via CnC-List
> *Sent:* Monday, February 08, 2016 6:41 AM
> *To:* [email protected]
> *Cc:* Petar Horvatic
> *Subject:* Re: Stus-List repairing large wet deck core areas
>
>
>
> So I did some digging over the weekend and I can say few things regarding
> deck and core along the genoa tracks for C&C38 mk2 from 1976.
>
> Top laminate is 3/16” thick.  Balsa is ½”.
>
> In my case, wet areas are pretty extensive.  Tapping and sounding the top
> got me to mark out a big rectangular area.  It extends from about 2”
> inboard of the genoa track and its about 12” wide.  It runs the length of
> the track.
>
> There is a 4” wide section of marine ply (also 1/2” thick) under the track
> itself.    I wonder if I do the same or just keep balsa.
>
> I posted some horrifying photos on cruisers forum.  Warning, pics are
> pretty disturbing.
>
> http://www.cruisersforum.com/forums/showthread.php?p=2039627#post2039627
>
> Haven’t done the bevel yet, and still have about an hour to get all the
> rot out.
>
> As I said on CF, I’ll do epoxy repairs and use the double bias stitch mat
> and toss out the top laminate.   I’ve had enough of polyester.  Its porous
> nowhere near as strong, and if you go to trouble of doing this much work,
> might as well not skimp out on material.  The big question is how to
> transition to gelcoat again?
>
> The cutout is the length of the track so I am not worried about genoa cars
> getting stuck on the track due to deck transitions.
>
>
>
> Petar Horvatic
>
> Sundowner
>
> 76 C&C 38MkII
>
> On the hard at Stanley’s in Barrington
>
>
>
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