<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>Hey Alan,</DIV><DIV> Do you know any Ham radio guys down there ?</DIV><DIV> </DIV><DIV> </DIV><DIV>Brian,</DIV><DIV> </DIV><DIV>KK6IRC</DIV><DIV> </DIV><DIV>73<BR><BR>--- personal_submersibles@psubs.org wrote:<BR><BR>From: Alan James via Personal_Submersibles <personal_submersibles@psubs.org><BR>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><BR>Subject: Re: [PSUBS-MAILIST] Gamma ring machining<BR>Date: Sat, 7 Mar 2015 19:09:51 +0000 (UTC)<BR><BR></DIV><DIV style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><DIV dir="ltr"><SPAN>Hank,</SPAN></DIV><DIV dir="ltr"><SPAN>had a quick search but couldn't find any suitable lapping</SPAN></DIV><DIV dir="ltr"><SPAN>solution for a home builder. There were referances to thick</SPAN></DIV><DIV dir="ltr"><SPAN>plate glass with a bonded diamond surface & marble as</SPAN></DIV><DIV dir="ltr"><SPAN>lapping plates.</SPAN></DIV><DIV dir="ltr"><SPAN>Alan</SPAN></DIV><BR> <DIV style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <DIV style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <DIV dir="ltr"> <HR size="1"> <FONT face="Arial" size="2"> <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 11:29 PM<BR> <B><SPAN style="font-weight: bold;">Subject:</SPAN></B> Re: [PSUBS-MAILIST] Gamma ring machining<BR> </FONT> </DIV> <DIV><BR><BR>Alan,<BR>I have been told that it would work, but I am not convinced. I would think the machined disk needs to be harder so it does not wear down. Honestly I just don't know. <BR>Hank--------------------------------------------<BR>On Fri, 3/6/15, Alan James via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR><BR> Subject: Re: [PSUBS-MAILIST] Gamma ring machining<BR> To: "Personal Submersibles General Discussion" <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> Received: Friday, March 6, 2015, 9:30 PM<BR> <BR> So<BR> do you think it would work with a flatsheet<BR> rotating on your reinforcing ring?I<BR> had thought of doing this with the hatch & landing,<BR> toget a<BR> perfect seal, not sure if I would need an orbital<BR> motionor<BR> not.Alan<BR> <BR> From: hank pronk via<BR> Personal_Submersibles<BR> <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> <BR> To: Personal<BR> Submersibles General Discussion<BR> <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> <BR> <BR> Sent:<BR> Saturday, March 7, 2015 12:52 PM<BR> Subject: Re:<BR> [PSUBS-MAILIST] Gamma ring machining<BR> <BR> <BR> <BR> Alan,<BR> Yes I<BR> have done lapping in the past. I mostly lap valves in<BR> engines. It works great on two tapered faces. <BR> Hank--------------------------------------------<BR> On Fri, 3/6/15, Alan James via<BR> Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> wrote:<BR> <BR> Subject: Re:<BR> [PSUBS-MAILIST] Gamma ring machining<BR> To:<BR> "Personal Submersibles General Discussion" <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> Received: Friday, March 6, 2015, 6:39 PM<BR> <BR> Hank,are you<BR> familiar with lapping?Rubbing<BR> <BR> two surfaces together with abrasive paste in<BR> betweenhttp://en.wikipedia.org/wiki/Lapping<BR> Haven't<BR> done it but have<BR> seen it in operation; you can get a very<BR> <BR> smoothsurface<BR> with this technique. Not sure<BR> if you could adapt it to your<BR> newflange<BR> facing machine.The<BR> machine I<BR> saw in operation was slow but required very little<BR> attention.Alan<BR> <BR> <BR> From: hank pronk<BR> via<BR> Personal_Submersibles<BR> <BR> <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> <BR> To: Personal<BR> Submersibles General Discussion<BR> <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> <BR> <BR> Sent:<BR> <BR> Saturday, March 7, 2015 12:18 PM<BR> Subject:<BR> Re:<BR> [PSUBS-MAILIST] Gamma ring machining<BR> <BR> <BR> <BR> Steve,<BR> I am half way done<BR> <BR> building my flange facing machine, I should be mostly<BR> done<BR> tomorrow. My rig already weighs<BR> about 700 lbs. I think<BR> it is important<BR> that it is heavy and mine is built heavier<BR> <BR> than the ones on YouTube. If it fails I can do as you<BR> mention. I actually did exactly what you say<BR> on<BR> Gamma's window frames. I used paint<BR> and glass with fine<BR> wet sand paper. I would<BR> guess the SS ring was much harder<BR> than the<BR> 516-70 I have.<BR> Hank<BR> <BR> --------------------------------------------<BR> On Fri, 3/6/15, Stephen Fordyce via<BR> Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> wrote:<BR> <BR> <BR> Subject: Re:<BR> [PSUBS-MAILIST] Gamma ring<BR> machining<BR> To:<BR> <BR> "Personal Submersibles General Discussion" <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> Received: Friday, March 6, 2015, 4:06 PM<BR> <BR> Hi Hank,<BR> <BR> <BR> We used<BR> a flame facing machine recently at<BR> work to<BR> do a<BR> stainless steel flange on a<BR> pressure vessel about 800mm ID.<BR> We hired it<BR> to use<BR> ourselves at great expense, and the thing<BR> <BR> weighed a couple of hundred kilos, was very<BR> <BR> solid.<BR> The fitter who did the job was<BR> very<BR> experienced<BR> <BR> machinist (but hadn't used<BR> one before)<BR> but could not get<BR> the finish<BR> very smooth - I can't find photos sorry,<BR> but<BR> it was like regular machining grooves<BR> but much<BR> larger - and<BR> it<BR> looked pretty ordinary. He<BR> spent several<BR> hours with a<BR> grinder cleaning<BR> it up.<BR> On balance, it<BR> probably would have<BR> been easier<BR> to just flatten it manually<BR> <BR> with a grinder (but it was on a<BR> live<BR> liquefied natural gas plant and they don't<BR> like<BR> sparks:) ). Wasn't critical to<BR> get a flat<BR> face as we<BR> <BR> were just making room for a<BR> gasket in a<BR> slot to have more<BR> <BR> <BR> compression.<BR> After getting it pretty<BR> flat<BR> with a straight<BR> <BR> edge, the fine<BR> stuff/quality control could<BR> be done by a thin<BR> layer of paint on a<BR> known flat plate or<BR> machined flange<BR> which you put on the welded<BR> <BR> flange and then where there is<BR> no<BR> paint<BR> deposited, you know that area is too<BR> low. Obviously<BR> paint is no good, but<BR> colored oil or 2-layered<BR> carbon paper<BR> (nice because then you have a<BR> trace of it) would probably<BR> <BR> work, or<BR> charcoal.<BR> <BR> Cheers,<BR> <BR> Steve<BR> On 06/03/2015 11:40<BR> PM,<BR> "hank pronk via<BR> <BR> Personal_Submersibles" <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> wrote:<BR> Brian,<BR> <BR> No, the machine is<BR> connected<BR> to the inside lip of the<BR> ring. The<BR> machine rotates<BR> on a center pivot. The cutter<BR> rotates<BR> instead of the part.<BR> <BR> <BR> Hank<BR> <BR> <BR> <BR> <BR> --------------------------------------------<BR> <BR> On Thu, 3/5/15, Brian<BR> Cox<BR> via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> wrote:<BR> <BR> <BR> <BR> <BR> Subject: Re:<BR> [PSUBS-MAILIST] Gamma ring<BR> machining<BR> <BR> To:<BR> "Personal Submersibles General<BR> <BR> Discussion"<BR> <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> <BR> Received: Thursday,<BR> March<BR> 5, 2015, 9:15 PM<BR> <BR> <BR> <BR> <BR> <BR> Hank, are you going to<BR> be<BR> <BR> turning the whole<BR> fricking sub ?<BR> <BR> <BR> <BR> <BR> Brian<BR> <BR> <BR> <BR> --- <A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A><BR> <BR> wrote:<BR> <BR> <BR> <BR> <BR> <BR> From:<BR> hank pronk via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> <BR> To: <A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A><BR> <BR> Subject:<BR> [PSUBS-MAILIST]<BR> Gamma ring machining<BR> <BR> <BR> Date:<BR> Thu, 5 Mar 2015 18:00:24 -0800<BR> <BR> <BR> <BR> <BR> Today my<BR> welder came to my shop and<BR> welded the<BR> <BR> reinforcing<BR> <BR> ring into<BR> Gamma, 10 passes, looks perfect!<BR> <BR> <BR> <BR> Next<BR> step, machine the<BR> ring. I am going to make a<BR> <BR> flange facing machine from<BR> a one ton truck full<BR> <BR> <BR> floater differential hub<BR> and a part or two borrowed<BR> from<BR> my<BR> <BR> <BR> spare lathe. The rig will be hydraulic<BR> drive. <BR> <BR> This may<BR> or may not<BR> work. :-) If it works and<BR> I<BR> <BR> am confident it<BR> will, I can also face CT<BR> lands, with the<BR> CT<BR> <BR> <BR> welded in place.<BR> <BR> <BR> Hank<BR> <BR> <BR> <BR> _______________________________________________<BR> <BR> <BR> Personal_Submersibles<BR> mailing list<BR> <BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> _______________________________________________<BR> <BR> <BR> Personal_Submersibles<BR> mailing list<BR> <BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> _______________________________________________<BR> <BR> Personal_Submersibles<BR> mailing list<BR> <BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR> <BR> <BR> -----Inline Attachment Follows-----<DIV><BR><BR></DIV><DIV><BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> _______________________________________________<BR> Personal_Submersibles mailing list<BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR> <BR> <BR> _______________________________________________<BR> Personal_Submersibles mailing list<BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR> <BR> <BR> -----Inline Attachment Follows-----<BR> <BR> <BR> _______________________________________________<BR> Personal_Submersibles mailing list<BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR> <BR> _______________________________________________<BR> Personal_Submersibles mailing list<BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR> <BR> <BR> -----Inline Attachment Follows-----<BR> <BR> _______________________________________________<BR> Personal_Submersibles mailing list<BR> <A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR> <A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR> <BR><BR>_______________________________________________<BR>Personal_Submersibles mailing list<BR><A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR><A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A></DIV><BR><BR></DIV> </DIV> </DIV> </DIV>_______________________________________________
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