<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div><span>Greg,</span></div><div id="yui_3_16_0_1_1497182539398_11813">Yes I have a small test chamber to try it out. If you want to make a sample, I will gladly test it. I would make some myself but I just don't have any time. My wife is taking Gamma in a parade for her bank, (don't let your savings sink) haha. If it rains that will be the only time gamma gets wet till next spring ;-(</div><div id="yui_3_16_0_1_1497182539398_11813">Hank</div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Saturday, June 10, 2017 9:25 PM, james cottrell via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv8893645464"><div><div style="color:#000;background-color:#fff;font-family:verdana, helvetica, sans-serif;font-size:13px;"><div id="yiv8893645464yui_3_16_0_1_1497150791755_4764"><span id="yiv8893645464yui_3_16_0_1_1497150791755_4888">Paraffin has several interesting properties- it is sometimes used in deep diving gliders that move up and down in the water column do to a very large (10% to 15%) volume change as it goes from solid to liquid with heat and cooling.</span></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_4764"><span><br clear="none"></span></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_4764"><span id="yiv8893645464yui_3_16_0_1_1497150791755_4966">On the other hand- in semi solid form- paraffin is non compressible (like water) and actually turns into a true solid at about 400 bar. It has very low density due to the large number of hydrogen atoms mixed in with a mostly carbon long chain structure.</span></div><div class="yiv8893645464qtdSeparateBR" id="yiv8893645464yui_3_16_0_1_1497150791755_4818"><br clear="none"></div><div class="yiv8893645464qtdSeparateBR" id="yiv8893645464yui_3_16_0_1_1497150791755_4818">From a fabrication standpoint, I could make buoyancy blocks using micro-spheres in paraffin much easier than doing the same task with epoxy. Maybe I'll whip some up and have it tested.</div><div class="yiv8893645464qtdSeparateBR" id="yiv8893645464yui_3_16_0_1_1497150791755_4818"><br clear="none"></div><div class="yiv8893645464qtdSeparateBR" id="yiv8893645464yui_3_16_0_1_1497150791755_4818">Greg C<br clear="none"><br clear="none"></div><div class="yiv8893645464yahoo_quoted" id="yiv8893645464yui_3_16_0_1_1497150791755_4884" style="display:block;"> <div id="yiv8893645464yui_3_16_0_1_1497150791755_4883" style="font-family:verdana, helvetica, sans-serif;font-size:13px;"> <div id="yiv8893645464yui_3_16_0_1_1497150791755_4882" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div class="yiv8893645464yqt5202905559" id="yiv8893645464yqt10823"><div dir="ltr" id="yiv8893645464yui_3_16_0_1_1497150791755_4885"> <font id="yiv8893645464yui_3_16_0_1_1497150791755_4886" size="2" face="Arial"> </font><hr id="yiv8893645464yui_3_16_0_1_1497150791755_4887" size="1"> <b><span style="font-weight:bold;">From:</span></b> Scott Waters via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Saturday, June 10, 2017 11:04 PM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] syntactic foam.<br clear="none"> </div> <div class="yiv8893645464y_msg_container" id="yiv8893645464yui_3_16_0_1_1497150791755_4881"><br clear="none"><div id="yiv8893645464"><div id="yiv8893645464yui_3_16_0_1_1497150791755_5228"><div id="yiv8893645464yui_3_16_0_1_1497150791755_5227">Hank,</div><div><br clear="none"></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5229">Hola from Costa Rica!</div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5230"><br clear="none"></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5231">Depends on if they are glass or carbon fiber spheres and what size they are. They are all pretty durable. We are actually cutting up the foam on Pisces and reattaching it to get the shapes we want. </div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5232"><br clear="none"></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5233">I do have a ton of syntactic foam that is cert to 400m that I'd sell you for super cheap. Like all of it for $200</div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5234"><br clear="none"></div><div>Thanks,</div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5235">Scott Waters</div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5236"><br clear="none"></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5237"><br clear="none"></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5238"><br clear="none"></div><div id="yiv8893645464composer_signature"><div id="yiv8893645464yui_3_16_0_1_1497150791755_5239" style="font-size:85%;color:#575757;">Sent from my U.S. Cellular® Smartphone</div></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5240"><br clear="none"></div><div class="yiv8893645464yqt1803877343" id="yiv8893645464yqt68279"><div id="yiv8893645464yui_3_16_0_1_1497150791755_5242" style="font-size:100%;color:#000000;"><div id="yiv8893645464yui_3_16_0_1_1497150791755_5241">-------- Original message --------</div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5243">From: hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> </div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5244">Date: 6/10/17 12:38 PM (GMT-06:00) </div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5245">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org> </div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5246">Subject: [PSUBS-MAILIST] syntactic foam. </div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5247"><br clear="none"></div></div><div id="yiv8893645464yui_3_16_0_1_1497150791755_5248" style="color:#000;background-color:#fff;font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px;"><div id="yiv8893645464yui_3_16_0_1_1497115959959_2837">I have an idea, but not sure if it will work. My idea is to fill a neutrally buoyant container with macro and micro spheres. After the container is as full as possible, then fill with an environmentally friendly oil. This would be more buoyant than using a resin and less complicated and cheaper. My concern is, how well will the spheres stand up against breaking from being in contact with the other spheres and the container. Are these spheres delicate? </div><div id="yiv8893645464yui_3_16_0_1_1497115959959_2837">Hank</div></div></div></div></div><div class="yiv8893645464yqt1803877343" id="yiv8893645464yqt17762">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br clear="none"><br clear="none"></div></div> </div> </div> </div></div><div id="yiv8893645464DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br clear="none">
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