<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><FONT size="2">Copper? </FONT><DIV><FONT size="2"><BR></FONT></DIV><DIV><FONT size="2"><BR></FONT><BR><SPAN style="font-size: 10pt;">--- personal_submersibles@psubs.org wrote:</SPAN><BR><BR><SPAN style="font-size: 10pt;">From: Rick Patton via Personal_Submersibles <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-size: 10pt;">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-size: 10pt;">Subject: Re: [PSUBS-MAILIST] MBT vent tube</SPAN><BR><SPAN style="font-size: 10pt;">Date: Fri, 17 Apr 2020 18:32:37 -1000</SPAN><BR><BR><DIV dir="ltr" style="font-size: 10pt;">I had the flat bar and steel table to tack it to and this way I would be able to use a rose bud to hot bend and wouldn't of been able to of done that with a wood template or jig. Also I like to use heat when I can as it retains it's shape and with cold bending, you always get some spring back so the jig needs to be smaller to allow for that. On the down side, I may have to pickle it to prevent future hazing after buffing since I messed with the molecules.<DIV>Rick</DIV></DIV><BR><DIV style="font-size: 10pt;"><DIV dir="ltr">On Fri, Apr 17, 2020 at 3:00 PM Sean T. Stevenson via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR></DIV><BLOCKQUOTE style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">The other way I have seen this done is to fabricate a custom round end mandrel out of wood where the round is cut with a router on a circle jig, and then the correct radius matching the tube OD is cut into the cylindrical face of the mandrel using the router with a bull nose bit. Essentially building a tube bender but with large bend radius.<BR><BR>Sean<BR><BR>-------- Original Message --------<BR>On Apr. 17, 2020, 18:49, Rick Patton via Personal_Submersibles < <A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BLOCKQUOTE><BR><P dir="ltr">Well I fabricated a jig on my fab table using 3/16” X 1 1/2” flat bar, packed the 1” SS tube with sand, welded ends on it, said a few prayers and went for it. I first tried cold bending it but needed a much stronger jig for that so I pulled out my rose bud and hot bent it and it worked great! Now I have a lot of buffing to do to make it look pretty again.<BR>
Rick<BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR></P>
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