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<p class="MsoNormal"><span style="font-size:11.0pt">Hi Hank:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I must start off telling you I recently discovered your youtube videos and have watched them all several times. It is through you that I discovered PSUB.org. Many thanks.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Until I read in some old threads on psub that you were working on epoxy viewports, I had been thinking about pouring my own acrylic. I will stick with that. Some of the other guys have recommended some really
good resource books which I am going to purchase. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Initially the submarine I want to build would be for no more than 300 foot depth. Primarily lake diving. I live pretty close to the ocean but would have to do some research as to locations I could launch and
dive. The advice about the boat trailer is the way to go. Otherwise I had thought about building some retractable wheels where I could roll the sub down off the trailer. Not that far yet.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have been advised by a few members that the flat panel design of my sub doesn’t lend itself to depth. The original design had a cylindrical pressure chamber but I removed that for more room inside. I thought
if I used ½” steel plate with interior ribs that would suffice for pressure. Evidently I am wrong on that so I will go back to the drawing board.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks again for your response.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Jeff<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Jefferson Tortorelli<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Tortorelli Creations<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">4910 Santa Anita Avenue<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">El Monte, CA 91731<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Cell: 909-908-3795<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Shop: 909-370-3131 <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Instagram: @tortorellicreations<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Personal_Submersibles <personal_submersibles-bounces@psubs.org>
<b>On Behalf Of </b>hank pronk via Personal_Submersibles<br>
<b>Sent:</b> Sunday, March 17, 2024 3:52 AM<br>
<b>To:</b> Jefferson Tortorelli via Personal_Submersibles <personal_submersibles@psubs.org><br>
<b>Subject:</b> Re: [PSUBS-MAILIST] information on viewports<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">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. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">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. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Hank<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">On Saturday, March 16, 2024 at 10:52:36 AM MDT, Jefferson Tortorelli via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>
wrote: <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p> </o:p></span></p>
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<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Hi:<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">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.<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Thanks,<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Jeff<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Jefferson Tortorelli<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Tortorelli Creations<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">4910 Santa Anita Avenue<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">El Monte, CA 91731<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Cell: 909-908-3795<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Shop: 909-370-3131<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Website:
<a href="http://www.Tortorelli.com" target="_blank">www.Tortorelli.com</a><o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Instagram: @tortorellicreations<o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv5113605516msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">_______________________________________________<br>
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<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><o:p></o:p></span></p>
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