<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym18_1_1458648879480_3682"><span>Hugh,</span></div><div id="yui_3_16_0_ym18_1_1458648879480_3682">Thanks' for the tip, gotta wonder how someone figured that out. </div><div id="yui_3_16_0_ym18_1_1458648879480_3682">Hank</div><div id="yui_3_16_0_ym18_1_1458648879480_3682"><span><br></span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Monday, March 21, 2016 7:18 PM, Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv4665250844"><style>#yiv4665250844 #yiv4665250844 --
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#yiv4665250844 </style><div><div class="yiv4665250844WordSection1"><div class="yiv4665250844MsoNormal"><span style="font-size:11.0pt;">Hank,</span></div><div class="yiv4665250844MsoNormal"><span style="font-size:11.0pt;">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.</span></div><div class="yiv4665250844MsoNormal"><span style="font-size:11.0pt;">Cheers Hugh</span></div><div class="yiv4665250844MsoNormal"><span style="font-size:11.0pt;"> </span></div><div><div class="yiv4665250844MsoNormal"><span lang="EN-NZ" style="font-size:11.0pt;"> </span></div></div><div class="yiv4665250844MsoNormal"><span style="font-size:11.0pt;"> </span></div><div class="yiv4665250844yqt5198452990" id="yiv4665250844yqt51249"><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm;"><div class="yiv4665250844MsoNormal"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>hank pronk via Personal_Submersibles<br clear="none"><b>Sent:</b> Tuesday, 22 March 2016 1:51 p.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw:</span></div></div></div><div class="yiv4665250844MsoNormal"> </div><div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:9.0pt;font-family:helveticaneue;color:black;">Hugh,</span></div></div><div><div class="yiv4665250844MsoNormal" 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.</span></div></div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:9.0pt;font-family:helveticaneue;color:black;">Hank</span></div></div><div><div class="yiv4665250844MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:9.0pt;font-family:helveticaneue;color:black;"> </span></div></div><div><div><div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:10.0pt;">On Sunday, March 20, 2016 4:56 PM, Hugh Fulton 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:</span><span style="font-family:helveticaneue;color:black;"></span></div></div><div class="yiv4665250844MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:helveticaneue;color:black;"> </span></div><div><div id="yiv4665250844"><div><div><div><div class="yiv4665250844MsoNormal" 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;"></span></div></div><div><div class="yiv4665250844MsoNormal" 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;"></span></div></div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:11.0pt;font-family:helveticaneue;color:black;"> </span><span style="font-family:helveticaneue;color:black;"></span></div></div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:11.0pt;font-family:helveticaneue;color:black;">Hugh</span><span style="font-family:helveticaneue;color:black;"></span></div></div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:11.0pt;font-family:helveticaneue;color:black;"> </span><span style="font-family:helveticaneue;color:black;"></span></div></div><div id="yiv4665250844yqt94182"><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm;"><div><div class="yiv4665250844MsoNormal" 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 rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles-bounces@psubs.org" target="_blank" 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 clear="none"><b>Sent:</b> Monday, 21 March 2016 11:30 a.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw:</span><span style="font-family:helveticaneue;color:black;"></span></div></div></div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;"> </span></div></div><div><div class="yiv4665250844MsoNormal" 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 :)</span></div></div><div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;">On 21 Mar 2016 8:55 am, "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:</span></div></div><div><div><div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:9.0pt;font-family:helveticaneue;color:black;">Thanks Steve,</span><span style="font-family:helveticaneue;color:black;"></span></div></div></div><div><div><div class="yiv4665250844MsoNormal" 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;"></span></div></div></div><div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:9.0pt;font-family:helveticaneue;color:black;">Hank</span><span style="font-family:helveticaneue;color:black;"></span></div></div></div><div><div style="margin-bottom:12.0pt;"><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-size:9.0pt;font-family:helveticaneue;color:black;"> </span><span style="font-family:helveticaneue;color:black;"></span></div></div></div><div><div><div><div><div><div class="yiv4665250844MsoNormal" 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 rel="nofollow" shape="rect" ymailto="mailto:mp13@live.ca" target="_blank" href="mailto:mp13@live.ca">mp13@live.ca</a>> wrote:</span><span style="font-family:helveticaneue;color:black;"></span></div></div></div><div style="margin-bottom:12.0pt;"><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;"> </span></div></div><div><div><div><div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;"><a rel="nofollow" shape="rect" target="_blank" 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">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 clear="none"><img id="yiv4665250844_x005f_x0000_i1025" border="0" width="313" height="161" src="cid:O00NnQnlCBDQWWFj2rW7"></span></div></div></div></div><div style="margin-bottom:12.0pt;"><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;"> </span></div></div></div></div></div></div></div></div><div style="margin-bottom:12.0pt;"><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span></div></div></div></div></div></div></div><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;"> </span></div><div id="yiv4665250844yqt51758"><div class="yiv4665250844MsoNormal" style="background:white;"><span style="font-family:helveticaneue;color:black;">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span></div></div><div class="yiv4665250844MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:helveticaneue;color:black;"> </span></div></div></div></div></div></div></div></div></div></div><br><div class="yqt5198452990" id="yqt03858">_______________________________________________<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"></div><br><br></div> </div> </div> </div></div></body></html>