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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'>Hank,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Old machining trick. IF you are getting chatter when drilling and want a good surface finish on a taper such as a countersink or a flat bottom then get a piece of rag a couple of thicknesses and a bit bigger than the hole and just drill or countersink or whatever straight through the rag and it tends to fill the cavities and give a bit of back pressure to the tool. Try it. Other than that grinding the tool so when you feed it in it is resting on the back of the flank and it self supports. Too many people have too great a clearance on the back edge of a drill point or tool. On a lathe you can also raise the tool center height a gnat and it will rest on the clearance.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers Hugh<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><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>hank pronk via Personal_Submersibles<br><b>Sent:</b> Tuesday, 22 March 2016 1:51 p.m.<br><b>To:</b> Personal Submersibles General Discussion<br><b>Subject:</b> Re: [PSUBS-MAILIST] Fw:<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'>Hugh,<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'>I never heard about drilling through a rag? tell me more.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'>Hank<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'><o:p> </o:p></span></p></div><div><div><div><div><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>On Sunday, March 20, 2016 4:56 PM, Hugh Fulton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-family:helveticaneue;color:black'><o:p> </o:p></span></p><div><div id=yiv9491477307><div><div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:helveticaneue;color:black'>Hank you can get a counterbore if it is the right size. They have a spigot for doing flat spots. They are used for doing a bore for capscrew heads and are a common tool.</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:helveticaneue;color:black'>If you are using them with a hand drill there is a potential for them to chatter but if you drill through a rag it stops the chatter and gives you a good finish.</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:helveticaneue;color:black'> </span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:helveticaneue;color:black'>Hugh</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:helveticaneue;color:black'> </span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div><div id=yiv9491477307yqt94182><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><div><p class=MsoNormal style='background:white'><b><span style='font-size:10.0pt;font-family:helveticaneue;color:black'>From:</span></b><span style='font-size:10.0pt;font-family:helveticaneue;color:black'> Personal_Submersibles [<a href="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Stephen Fordyce via Personal_Submersibles<br><b>Sent:</b> Monday, 21 March 2016 11:30 a.m.<br><b>To:</b> Personal Submersibles General Discussion<br><b>Subject:</b> Re: [PSUBS-MAILIST] Fw:</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div></div><div><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'>Excellent, much easier to use an existing tool than make one - but I remain sceptical you can be bothered waiting for it to arrive :)<o:p></o:p></span></p></div><div><div><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'>On 21 Mar 2016 8:55 am, "hank pronk via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<o:p></o:p></span></p></div><div><div><div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'>Thanks Steve,</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'>Here is the tool I need, perfect! now I can look for one.</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'>Hank</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div></div><div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:helveticaneue;color:black'> </span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div></div><div><div><div><div><div><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:helveticaneue;color:black'>On Sunday, March 20, 2016 3:50 PM, xxx xxxxx <<a href="mailto:mp13@live.ca" target="_blank">mp13@live.ca</a>> wrote:</span><span style='font-family:helveticaneue;color:black'><o:p></o:p></span></p></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'> <o:p></o:p></span></p></div><div><div><div><div><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'><a href="https://www.google.ca/imgres?imgurl=http%3A%2F%2Fwww.gandtrack.co.uk%2Fimages%2Fback-spot-face-cutter-1.jpg&imgrefurl=https%3A%2F%2Fwww.gandtrack.com%2Fproducts%2Fback-spot-face-cutters&docid=cHlyzH-_dmgKYM&tbnid=6Xe80KbEvs1MrM%3A&w=600&h=310&client=safari&ei=4RrvVpWwKMODmQGTxIX4BA" target="_blank">https://www.google.ca/imgres?imgurl=http://www.gandtrack.co.uk/images/back-spot-face-cutter-1.jpg&imgrefurl=https://www.gandtrack.com/products/back-spot-face-cutters&docid=cHlyzH-_dmgKYM&tbnid=6Xe80KbEvs1MrM:&w=600&h=310&client=safari&ei=4RrvVpWwKMODmQGTxIX4BA</a> <br><img border=0 width=313 height=161 id="yiv9491477307_x005f_x0000_i1025" src="cid:image001.jpg@01D18445.4BD03080"><o:p></o:p></span></p></div></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'> <o:p></o:p></span></p></div></div></div></div></div></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><o:p></o:p></span></p></div></div></div></div></div></div><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'><o:p> </o:p></span></p><div id=yqt51758><p class=MsoNormal style='background:white'><span style='font-family:helveticaneue;color:black'>_______________________________________________<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" target="_blank">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:helveticaneue;color:black'><o:p> </o:p></span></p></div></div></div></div></div></div></body></html>