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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I have spent half my life designing things to avoid welding.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you insist on welding then normally you should not have it butted up but a small gap so the weld doesn’t crack after cooling and contraction.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Still think you need to allow for cleaning up for concentricity afterwards. You can check with a DTI. I prefer bolt together. Hugh<o:p></o:p></span></p><div><p class=MsoNormal><span lang=EN-NZ style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Alan James via Personal_Submersibles<br><b>Sent:</b> Friday, 29 April 2016 11:48 a.m.<br><b>To:</b> Personal Submersibles General Discussion<br><b>Subject:</b> Re: [PSUBS-MAILIST] Welding<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div id="yui_3_16_0_ym19_1_1461883649540_3030"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>Hugh,<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3010"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>went & talked with a welding specialist this morning who seemed to think<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_2984"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>the plug idea would be good. His only reservations were whether I could<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_2986"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>get the plug out afterward. I said it would be designed to be able to be<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_2987"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>pressed out.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3008"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>The bearing seat is some distance from the welding & has a thick section<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3014"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>of aluminum between. See attachment (not dimensionally correct).<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3031"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>The plug should stop the tube section from distorting, shouldn't it.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3058"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>I have 6 of these to make initially & it will be a lot less work if I can weld.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3172"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>I need to go with the steel plug as an aluminum plug could get damaged<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3198"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>in the pressing process.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3085"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>Am I convincing you or does this still get the thumbs down?<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3157"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>Cheers Alan<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_2922"><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_2947"><div id="yui_3_16_0_ym19_1_1461883649540_2946"><div id="yui_3_16_0_ym19_1_1461883649540_2945"><div id="yui_3_16_0_ym19_1_1461883649540_2944"><div class=MsoNormal align=center style='text-align:center;background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><hr size=1 width="100%" align=center></span></div><p class=MsoNormal style='background:white'><b id="yui_3_16_0_ym19_1_1461883649540_3012"><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> Hugh Fulton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br><b>To:</b> 'Personal Submersibles General Discussion' <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br><b>Sent:</b> Friday, April 29, 2016 8:55 AM<br><b>Subject:</b> Re: [PSUBS-MAILIST] Welding</span><span style='font-family:"Helvetica","sans-serif";color:black'><o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461883649540_3086"><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'><br>Alan,<br>Stay away from welding or completely re-machine as Hank says otherwise you<br>will havev concentricity issues with the bearings etc.<br>Besides Aluminium will be a better heat sink than a steel insert. Hugh <o:p></o:p></span></p><div id=yqtfd27368><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'><br><br><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" id="yui_3_16_0_ym19_1_1461883649540_3136">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" id="yui_3_16_0_ym19_1_1461883649540_3137">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div></div></div></div></div></div></body></html>