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<div>Brian, I don't want to weld because it does not need to be welded. I am doing this as a test run for Elementary much deeper ;-) </div><div>Hank</div><div><br></div>
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On Monday, November 27, 2017, 10:46:04 AM MST, Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv8874335441"><div><div style="font-family:Arial, sans-serif;font-size:10pt;"><div>Hank, Are you thinking about using O ring seals on the outside and in the opening? They have big machines that could literally punch a hole like that . Why don't you want to weld it in?</div><div> </div><div>Brian<br clear="none"><br clear="none">--- personal_submersibles@psubs.org wrote:<br clear="none"><br clear="none">From: hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">To: Stephen Fordyce via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">Subject: Re: [PSUBS-MAILIST] boring tool<br clear="none">Date: Mon, 27 Nov 2017 12:56:47 +0000 (UTC)<br clear="none"><br clear="none"></div><div class="yiv8874335441yqt6095797655" id="yiv8874335441yqt33407"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Rick, I thought about a Mag drill, but I was thinking about taking my small milling machine apart and making a mount on the sphere. A mag drill could be adapted easier because I could just tack weld a flat plate to the hull for it to sit on. I have never used a mag drill and don't know how slow they can turn? I figure I will have to turn something pretty slow. </div><div>Steve, I don't know if I can cut it out with a milling bit, I have very little experience with this idea. I could cut it out small with a torch using a circle guide also. I hate machining torch cut pieces because they tent to surface harden. I suppose I could grind the hard surface off first. I am looking for a easy clean way to do this, before I jump in and do it the hard way. </div><div>My goal in to put two small ports in Elementary 3000 without welding them in. I will machine two holes in the hull and then machine two conical port frames to fit the hull perfectly and will be retained from the inside of the hull. </div><div>Any clever ideas to achieve this would be appreciated.</div><div>Hank</div><div><br clear="none"></div><div><br clear="none"></div>
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On Sunday, November 26, 2017, 11:16:30 PM MST, Stephen Fordyce via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div><div><div dir="ltr"><div>Hi Hank,</div><div>You could probably get away with using a holesaw - a one-piece one design for cutting metal, not the adjustable ones for cutting wood. It would take a while and need lots of coolant and force, but I think it would be quite doable (I've seen big ones used on thick steel before). The big ones aren't cheap though.</div><div><br clear="none"></div><div>Or couldn't you just mill out the circle with a smaller milling bit, so that you end up with a disc that drops out when you finish the cut?</div><div><br clear="none"></div><div>Cheers,</div><div>Steve</div></div><div><br clear="none"><div><div>On Mon, Nov 27, 2017 at 4:17 PM, Rick Patton via Personal_Submersibles <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204, 204, 204);border-left-width:1px;border-left-style:solid;"><div>Hank, </div><div>Have you checked into a mag drill yet?</div><div>Rick </div><div><br clear="none"><div><div><div><div>On Sun, Nov 26, 2017 at 1:49 PM hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></div></div></div><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204, 204, 204);border-left-width:1px;border-left-style:solid;"><div><div><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>Hi All,</div><div>Is there such a tool that can bore a 6 inch dia hole in 1 inch thick plate. Some sort of milling machine tool, it needs to machine a precision hole.</div><div>Hank</div></div></div></div></div>______________________________ _________________<br clear="none">
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