<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1425695106259_3534"><span>So do you think it would work with a flat</span></div><div dir="ltr" id="yui_3_16_0_1_1425695106259_3533"><span>sheet rotating on your reinforcing ring?</span></div><div dir="ltr" id="yui_3_16_0_1_1425695106259_3533"><span>I had thought of doing this with the hatch & landing, to</span></div><div dir="ltr" id="yui_3_16_0_1_1425695106259_3533"><span id="yui_3_16_0_1_1425695106259_5320">get a perfect seal, not sure if I would need an orbital motion</span></div><div dir="ltr" id="yui_3_16_0_1_1425695106259_3533"><span>or not.</span></div><div dir="ltr" id="yui_3_16_0_1_1425695106259_3533"><span id="yui_3_16_0_1_1425695106259_5321">Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1425695106259_2615"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1425695106259_2614"> <div dir="ltr" id="yui_3_16_0_1_1425695106259_2613"> <hr size="1"> <font size="2" face="Arial" id="yui_3_16_0_1_1425695106259_5022"> <b><span style="font-weight:bold;">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, March 7, 2015 12:52 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Gamma ring machining<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1425695106259_2635"><br><br clear="none">Alan,<br clear="none">Yes I have done lapping in the past. I mostly lap valves in engines. It works great on two tapered faces. <br clear="none">Hank--------------------------------------------<br clear="none">On Fri, 3/6/15, Alan James via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1425695106259_3535">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma ring machining<br clear="none"> To: "Personal Submersibles General Discussion" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Friday, March 6, 2015, 6:39 PM<br clear="none"> <br clear="none"> Hank,are you<br clear="none"> familiar with lapping?Rubbing<br clear="none"> two surfaces together with abrasive paste in<br clear="none"> betweenhttp://en.wikipedia.org/wiki/Lapping<br clear="none"> Haven't<br clear="none"> done it but have seen it in operation; you can get a very<br clear="none"> smoothsurface<br clear="none"> with this technique. Not sure if you could adapt it to your<br clear="none"> newflange<br clear="none"> facing machine.The<br clear="none"> machine I saw in operation was slow but required very little<br clear="none"> attention.Alan<br clear="none"> <br clear="none"> <br clear="none"> From: hank pronk via<br clear="none"> Personal_Submersibles<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> To: Personal<br clear="none"> Submersibles General Discussion<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> <br clear="none"> Sent:<br clear="none"> Saturday, March 7, 2015 12:18 PM<br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Gamma ring machining<br clear="none"> <br clear="none"> <br clear="none"> Steve,<br clear="none"> I am half way done<br clear="none"> building my flange facing machine, I should be mostly done<br clear="none"> tomorrow. My rig already weighs about 700 lbs. I think<br clear="none"> it is important that it is heavy and mine is built heavier<br clear="none"> than the ones on YouTube. If it fails I can do as you<br clear="none"> mention. I actually did exactly what you say on<br clear="none"> Gamma's window frames. I used paint and glass with fine<br clear="none"> wet sand paper. I would guess the SS ring was much harder<br clear="none"> than the 516-70 I have.<br clear="none"> Hank<br clear="none"> --------------------------------------------<br clear="none"> On Fri, 3/6/15, Stephen Fordyce via<br clear="none"> Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Gamma ring machining<br clear="none"> To:<br clear="none"> "Personal Submersibles General Discussion" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Friday, March 6, 2015, 4:06 PM<br clear="none"> <br clear="none"> Hi Hank,<br clear="none"> <br clear="none"> <br clear="none"> We used a flame facing machine recently at<br clear="none"> work to do a<br clear="none"> stainless steel flange on a<br clear="none"> pressure vessel about 800mm ID.<br clear="none"> We hired it<br clear="none"> to use ourselves at great expense, and the thing<br clear="none"> weighed a couple of hundred kilos, was very<br clear="none"> solid.<br clear="none"> The fitter who did the job was very<br clear="none"> experienced<br clear="none"> machinist (but hadn't used<br clear="none"> one before) but could not get<br clear="none"> the finish<br clear="none"> very smooth - I can't find photos sorry, but<br clear="none"> it was like regular machining grooves but much<br clear="none"> larger - and<br clear="none"> it looked pretty ordinary. He<br clear="none"> spent several hours with a<br clear="none"> grinder cleaning<br clear="none"> it up.<br clear="none"> On balance, it probably would have<br clear="none"> been easier<br clear="none"> to just flatten it manually<br clear="none"> with a grinder (but it was on a<br clear="none"> live<br clear="none"> liquefied natural gas plant and they don't like<br clear="none"> sparks:) ). Wasn't critical to get a flat<br clear="none"> face as we<br clear="none"> were just making room for a<br clear="none"> gasket in a slot to have more<br clear="none"> <br clear="none"> compression.<br clear="none"> After getting it pretty flat<br clear="none"> with a straight<br clear="none"> edge, the fine<br clear="none"> stuff/quality control could be done by a thin<br clear="none"> layer of paint on a known flat plate or<br clear="none"> machined flange<br clear="none"> which you put on the welded<br clear="none"> flange and then where there is<br clear="none"> no paint<br clear="none"> deposited, you know that area is too low. Obviously<br clear="none"> paint is no good, but colored oil or 2-layered<br clear="none"> carbon paper<br clear="none"> (nice because then you have a<br clear="none"> trace of it) would probably<br clear="none"> work, or<br clear="none"> charcoal.<br clear="none"> Cheers,<br clear="none"> <br clear="none"> Steve<br clear="none"> On 06/03/2015 11:40<br clear="none"> PM,<br clear="none"> "hank pronk via<br clear="none"> Personal_Submersibles" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> Brian,<br clear="none"> <br clear="none"> No, the machine is connected<br clear="none"> to the inside lip of the<br clear="none"> ring. The<br clear="none"> machine rotates on a center pivot. The cutter<br clear="none"> rotates instead of the part.<br clear="none"> <br clear="none"> <br clear="none"> Hank<br clear="none"> <br clear="none"> <br clear="none"> --------------------------------------------<br clear="none"> <br clear="none"> On Thu, 3/5/15, Brian Cox<br clear="none"> via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Gamma ring machining<br clear="none"> <br clear="none"> To: "Personal Submersibles General<br clear="none"> Discussion"<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> Received: Thursday, March<br clear="none"> 5, 2015, 9:15 PM<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Hank, are you going to<br clear="none"> be<br clear="none"> <br clear="none"> turning the whole<br clear="none"> fricking sub ?<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Brian<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> --- <a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> <br clear="none"> wrote:<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> From: hank pronk via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1425695106259_3833">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> To: <a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> <br clear="none"> Subject: [PSUBS-MAILIST]<br clear="none"> Gamma ring machining<br clear="none"> <br clear="none"> <br clear="none"> Date: Thu, 5 Mar 2015 18:00:24 -0800<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Today my<br clear="none"> welder came to my shop and welded the<br clear="none"> <br clear="none"> reinforcing<br clear="none"> <br clear="none"> ring into<br clear="none"> Gamma, 10 passes, looks perfect!<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Next<br clear="none"> step, machine the ring. I am going to make a<br clear="none"> <br clear="none"> flange facing machine from<br clear="none"> a one ton truck full<br clear="none"> <br clear="none"> <br clear="none"> floater differential hub and a part or two borrowed<br clear="none"> from<br clear="none"> my<br clear="none"> <br clear="none"> <br clear="none"> spare lathe. The rig will be hydraulic drive. <br clear="none"> <br clear="none"> This may or may not<br clear="none"> work. :-) If it works and I<br clear="none"> <br clear="none"> am confident it will, I can also face CT<br clear="none"> lands, with the<br clear="none"> CT<br clear="none"> <br clear="none"> welded in place.<br clear="none"> <br clear="none"> Hank<br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles<br clear="none"> mailing list<br clear="none"> <br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles<br clear="none"> mailing list<br clear="none"> <br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles<br clear="none"> mailing list<br clear="none"> <br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<div class="qtdSeparateBR"><br><br></div><div class="yqt4627437611" id="yqtfd31114"><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></div><br><br></div> </div> </div> </div></body></html>