I used 9mm cast acrylic, applying it with Plexus. Don't use extruded, as it's weaker. Lexan is stronger than acrylic, but it scratches more easily.
Alan Bergen 35 Mk III Thirsty Rose City YC Portland, OR On Sun, Nov 10, 2019 at 7:38 AM Patrick Davin via CnC-List < cnc-list@cnc-list.com> wrote: > I'm getting ready to do the windows project and have read the prior > threads about it (plus the helpful Boatworks youtube video). > > When others did this project, on Landfall 38 or similar sized C&C's, did > you use 3/8" thickness or 1/4" on the new windows? > > My existing windows are 3/8", thrubolted with black sealant. The sealant > squeezed out to the edges due to the thrubolting, so the windows are very > much flush with the inner fiberglass. I'm wondering when I switch to VHB, > will the tape thickness (0.045 in / 1.1mm) cause the windows to protrude > noticeably? > > Paul on SV Johanna Rose (LF38) says on his blog that he used 1/4" > thickness (Lexan/polycarbonate, which I am not doing). > > Another thought is if others used 1/4" acrylic, will I be able to flex > 3/8" acrylic enough to fit the contour of the hull? 3/8" is pretty stiff. > I've read about the different methods people used to hold the windows in > place until the VHB cures and am thinking of using the weighted plank > method (place wood boards at an angle to the exterior and put weights on > them to apply pressure) plus just manually holding in place for the first > 10-15 min. > > -Patrick > 1984 C&C LF38 > Seattle, WA > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.paypal.me_stumurray&d=DwICAg&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=9w3G7Cf8YfQnrjmtuNxwDJYr3JMv9f1pAfgAJ9xXYQQ&m=pV1Lr2OtUwFQuIz-_mY-UxEztI0G1lIEkTXWsWFQiII&s=Zua4MR4wXKsjhYi-eA-cwNzZFAK-_6ml2WfnxK8Ud_c&e= > >
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