<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-size: 13px;color: rgb(0, 0, 0);font-family: arial, sans-serif;"><br><div>Thinking about it some more, maybe the weak plastic isn't a bad idea, since it will easily break off if it catches on anything. It may also be brittle enough</div><div>that it doesn't foul the prop when broken.</div><div><br></div><div>The price point does seem low, especially given how slow 3D printers are, I would get that would take ~10 hours to print. Although it may be cast rather</div><div>than 3D printed, from a mold that was 3D printed (this is how I was planning on making prop shrouds) which is how we see the 3D print artifacts.</div><div><br></div><div>Cheers!</div><div> Ian.<br></div><blockquote style="padding-left: 5px; margin-left: 0px; border-left: #0000ff 2px solid; font-weight: normal; font-style: normal; text-decoration: none; font-size: 10pt; font-family: arial,sans-serif; color: black;">-----Original Message-----
<br>From: T Novak via Personal_Submersibles <personal_submersibles@psubs.org>
<br>Sent: Jul 7, 2020 4:28 PM
<br>To: 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org>
<br>Subject: Re: [PSUBS-MAILIST] Prop guard
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Good points, Ian.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">The type of plastic is really important. We have found that acetone works really well in bonding printed layers, resulting in a much stronger printed structure. They may be doing this, or we could do it ourselves upon receipt. The very slow speeds that we cruise at may mean that this unit will be of sufficient strength for our purposes. Personally, I think that the price just seems too low to be confident on its value. But, it's probably better than no prop guard at all.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Tim<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" lang="EN-US"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>irox via Personal_Submersibles<br><b>Sent:</b> Tuesday, July 7, 2020 11:50 AM<br><b>To:</b> Personal Submersibles General Discussion <personal_submersibles@psubs.org>; 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org><br><b>Subject:</b> Re: [PSUBS-MAILIST] Prop guard<o:p></o:p></span></p></div></div><p class="MsoNormal"><o:p> </o:p></p><div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I see it's 3D printed, although it doesn't identify what the plastic is, or how it is reinforced. For me this raises a couple<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">of concerns, 1) 3D prints are not super strong, and something hitting the prop-guard may cause it to break and foul the<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">prop, 2) the layer manufacturing process used is not going to be water tight, allowing water into voids in the prop-guard,<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">which will likely shorten the time-to-fail.<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">The "reinforced" bit is interesting, I wonder if there is a metal ring buried in the guard, or if there are using plastic with<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">something added/embedded to provided reinforcement (e.g. short strands of glass).<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I would be possible to design something similar which was parametric, and could be customized for each trolling motor<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">(rather than two sizes fit all) before being printed out.<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Cheers,<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> Ian.<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p></div><blockquote style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt;margin-left:0in;margin-top:5.0pt;margin-bottom:5.0pt"><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">-----Original Message----- <br>From: T Novak via Personal_Submersibles <br>Sent: Jul 7, 2020 10:55 AM <br>To: 'Personal Submersibles General Discussion' <br>Subject: Re: [PSUBS-MAILIST] Prop guard <br><br><br><o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">This prop guard certainly looks interesting. particularly the introductory price. It would not be difficult to modify the attachment design to something slicker, or use the ring as the core for a kort nozzle.</span><span style="color:black"><o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Thanks, James.</span><span style="color:black"><o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Tim</span><span style="color:black"><o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><span style="color:black"><o:p></o:p></span></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black" lang="EN-US"> Personal_Submersibles [<a target="_blank" href="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>James Frankland via Personal_Submersibles<br><b>Sent:</b> Tuesday, July 7, 2020 1:04 AM<br><b>To:</b> Personal Submersibles General Discussion <<a target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br><b>Subject:</b> [PSUBS-MAILIST] Prop guard</span><span style="color:black"><o:p></o:p></span></p><p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p><div><div><p class="MsoNormal"><span style="color:black">Not sure of the quality judging by the "Engrish".<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="color:black"><a target="_blank" href="https://propgad.com/">https://propgad.com/</a> <o:p></o:p></span></p></div></div></blockquote></div></div></div></personal_submersibles@psubs.org></personal_submersibles@psubs.org></blockquote></div></body></html>