Hank, when you did the epoxy dome experiment, did you happen to notice whether that 0.040" was due to deformation of the dome, versus extrusion / creep right at the seat?<br><br>Sean<br>-------- Original Message --------<br>On Mar 17, 2024, 04:51, hank pronk via Personal_Submersibles < personal_submersibles@psubs.org> wrote:<blockquote class="protonmail_quote"><br><html><head></head><body><div class="ydp56225857yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div dir="ltr" data-setdir="false">Hi Jeff, Hank Pronk here. I did do some testing with epoxy as a material for fabricating domes. I did destructive testing and cycle testing. Although the material stood up compared to acrylic in destructive tests, I had some real concerns with the cycle test results. After a few thousand cycles, the Epoxy was deflecting (bending) by .040 inches more than the starting point. I am not qualified to comment on whether that is okay or not. Had all testing continued to compare with acrylic I may have continued. I would not attempt to use Epoxy to fabricate ports. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">When designing your sub, you must consider how you will use it and where. Once you decide where the sub will be operating, check for launch points and measure the water depth at those point. Design the sub so it can float off a standard boat trailer. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Hank</div><div><br></div>
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On Saturday, March 16, 2024 at 10:52:36 AM MDT, Jefferson Tortorelli via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<p class="yiv5113605516MsoNormal">Hi:</p>
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<p class="yiv5113605516MsoNormal">I am new to this organization and am currently in the design phase of a two person submersible. I am looking for information on obtaining acrylic viewports or learning (if possible) how to fabricate my own.</p>
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<p class="yiv5113605516MsoNormal">Thanks,</p>
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<p class="yiv5113605516MsoNormal">Jeff<b></b></p>
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<p class="yiv5113605516MsoNormal"><span style="">Jefferson Tortorelli</span></p>
<p class="yiv5113605516MsoNormal"><span style="">Tortorelli Creations</span></p>
<p class="yiv5113605516MsoNormal"><span style="">4910 Santa Anita Avenue</span></p>
<p class="yiv5113605516MsoNormal"><span style="">El Monte, CA 91731</span></p>
<p class="yiv5113605516MsoNormal"><span style="">Cell: 909-908-3795</span></p>
<p class="yiv5113605516MsoNormal"><span style="">Shop: 909-370-3131</span></p>
<p class="yiv5113605516MsoNormal"><span style="">Website: <a rel="nofollow noopener noreferrer" target="_blank" href="http://www.Tortorelli.com">
www.Tortorelli.com</a></span></p>
<p class="yiv5113605516MsoNormal"><span style="">Instagram: @tortorellicreations</span></p>
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