If I remember correctly, C&C used 7/16" balsa in the decks of their production boats built in NOTL and Rhode Island. However, as mentioned previously, always wise to confirm with a core sample taken with a small hole saw. I would not recommend using low density Polyurethane core for any structural coring. Use either balsa or a minimum of 5 Lb. PVC.
Rob On Mon, Sep 28, 2015 at 3:27 PM, Petar Horvatic via CnC-List < cnc-list@cnc-list.com> wrote: > I’ll measure before I order the core. I have some wet spots in the area > of port genoa track(aft section). Interestingly the other side is dry. I > thought I would order the core ahead of time. But after haul out, I’ll > wait to dig stuff out before ordering. I’m not very motivated to do this, > but it needs to be done. > > Did anyone use expandable polyurethane foam for coring? Merton’s > Fiberglass sells it. > > > > > > Petar Horvatic > > Sundowner > > 76 C&C 38MkII > > Newport, RI > > > > > > > > > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Andrew > Burton via CnC-List > *Sent:* Monday, September 28, 2015 2:52 PM > *To:* cnc-list@cnc-list.com > *Cc:* Andrew Burton > > *Subject:* Re: Stus-List Balsa core thickness > > > > On my 1981 C&C 40, the core thickness is 3/4". When I installed the > windlass I found the centerline, where a staysail track was, has plywood > reinforcement about 3" wide. > > Andy > > C&C 40 > > Peregrine > > > > On Mon, Sep 28, 2015 at 1:35 PM, Martin DeYoung via CnC-List < > cnc-list@cnc-list.com> wrote: > > On Calypso, built in 1970 at Bruckmann's, the deck balsa is nominally > 1/2". When replacing failed balsa I have been purchasing 1/2" then sanding > it down a little to leave room for epoxy and filler and the new epoxy/glass > laminations. > > > > If you remove a fastener in the general area of the deck you would be able > to verify that C&C did not use different thicknesses in newer > designs/builds. > > > > Martin > > Calypso > > 1971 C&C 43 > > Seattle > ------------------------------ > > *From:* CnC-List [cnc-list-boun...@cnc-list.com] on behalf of Rick Brass > via CnC-List [cnc-list@cnc-list.com] > *Sent:* Monday, September 28, 2015 7:28 AM > *To:* cnc-list@cnc-list.com > *Cc:* Rick Brass > *Subject:* Re: Stus-List Balsa core thickness > > Petar; > > > > If I recall correctly, it is about 3/8” – perhaps ½” > > > > Rick Brass > > *Imzadi *C&C 38 mk 2 > > *la Belle Aurore *C&C 25 mk1 > > Washington, NC > > > > > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of > *phorvati > . via CnC-List > *Sent:* Saturday, September 26, 2015 8:01 PM > *To:* CNC boat owners, cnc-list <cnc-list@cnc-list.com> > *Cc:* phorvati . <phorv...@gmail.com> > *Subject:* Stus-List Balsa core thickness > > > > Does anyone know what the thickness of balsa core is along the geona track > section of deck on 1976 C&C 38 Mk2 > > Petar > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > > -- > > Andrew Burton > 61 W Narragansett Ave > Newport, RI > USA 02840 > http://sites.google.com/site/andrewburtonyachtservices/ > phone +401 965 5260 > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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