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<div dir="ltr" data-setdir="false">Hi Rick,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Hopefully Alec Smyth will see your post and comment. Also, Dave Colombo just went through using caulking to re-mount his K-250 dome in the field at Block Island and can be another good resource.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">How round is your viewport thru-hull? If it's close to perfect why not reduce the viewport diameter just enough to get a tight clearance and stick with a gasket seal?</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">If you decide to use sikaflex, a loose clearance (1/8 to 3/16) should work I suspect. You don't want too large of a gap because geometrically it will negatively affect the required seat width for the acrylic.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Jon</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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On Monday, December 9, 2024 at 08:24:23 PM EST, Rick Patton via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div dir="ltr"><br></div><div dir="ltr">Sent from my iPhone<br></div><div dir="ltr">I got a real surprise yesterday, I went to fit my large viewport in front on my K-350 and it wouldn’t slide inside the receiver that I had machined for it. They made it about 1/4” too small!<br></div><div dir="ltr">I should have double checked it before welding it into the front head but didn’t. <br></div><div dir="ltr">I had the viewports cut in California and is to speck, 15”. Kitteredge called out using gasket but a lot of you I believe used Silaflex that comes out of a tube.<br></div><div dir="ltr">I found someone who can chuck up something that is 16” in diameter so will have him turn it down 1/4” or so, so it will fit in the receptacle but I need enough of a gap on the edges for the Sikaflex to ooze out. <br></div><div dir="ltr">Your thoughts? <br></div><div dir="ltr">Rick<br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div></div>
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