{"id":25607,"date":"2023-10-23T13:28:09","date_gmt":"2023-10-23T13:28:09","guid":{"rendered":"https:\/\/clarkson-osborn.com\/?post_type=techsheet&#038;p=25607"},"modified":"2023-11-21T20:55:39","modified_gmt":"2023-11-21T20:55:39","slug":"drills-carbide","status":"publish","type":"techsheet","link":"https:\/\/clarkson-osborn.com\/fr\/resources\/technical-data\/recommended-cutting-speeds\/drills-carbide\/","title":{"rendered":"Drills &#8211; Carbide"},"content":{"rendered":"<script language=\"JavaScript\" type=\"text\/JavaScript\">\n<!--\n\nvar num1row1 = 4584;\nvar num1row2 = 4584;\nvar num1row3 = 3973;\nvar num1row4 = 3285;\nvar num1row5 = 2598;\nvar num1row6 = 1986;\nvar num1row7 = 917;\nvar num1row8 = 4584;\nvar num1row9 = 9168;\nvar num1row10 = 9168;\nvar num1row11 = 3209;\nvar num1row12 = 3209;\nvar num1row13 = 2445;\n\nfunction frac_calc(passedNum,type)\n{\n\nif (!passedNum==0) {\n\nnum1row1 = Math.round((3.82*300)\/passedNum);\nnum1row2 = Math.round((3.82*300)\/passedNum);\nnum1row3 = Math.round((3.82*260)\/passedNum);\nnum1row4 = Math.round((3.82*215)\/passedNum);\nnum1row5 = Math.round((3.82*170)\/passedNum);\nnum1row6 = Math.round((3.82*130)\/passedNum);\nnum1row7 = Math.round((3.82*60)\/passedNum);\nnum1row8 = Math.round((3.82*300)\/passedNum);\nnum1row9 = Math.round((3.82*600)\/passedNum);\nnum1row10 = Math.round((3.82*600)\/passedNum);\nnum1row11 = Math.round((3.82*210)\/passedNum);\nnum1row12 = Math.round((3.82*210)\/passedNum);\nnum1row13 = Math.round((3.82*160)\/passedNum);\n\nfrmValues.row1.value = num1row1\nfrmValues.row2.value = num1row2\nfrmValues.row3.value = num1row3\nfrmValues.row4.value = num1row4\nfrmValues.row5.value = num1row5\nfrmValues.row6.value = num1row6\nfrmValues.row7.value = num1row7\nfrmValues.row8.value = num1row8\nfrmValues.row9.value = num1row9\nfrmValues.row10.value = num1row10\nfrmValues.row11.value = num1row11\nfrmValues.row12.value = num1row12\nfrmValues.row13.value = num1row13\n\nif (type==1) {\ndocument.frmSelect.lstNumber.value = \"\";\ndocument.frmSelect.lstLetter.value = \"\";\n}\n\nif (type==2) {\ndocument.frmSelect.lstFrac.value = \"\";\ndocument.frmSelect.lstLetter.value = \"\";\n}\n\nif (type==3) {\ndocument.frmSelect.lstNumber.value = \"\";\ndocument.frmSelect.lstFrac.value = \"\";\n}\n\nthis.focus();\n\n}\n}\n\n\n\/\/-->\n<\/script>\n<div align=\"center\"><br>\n<\/div>\n<div align=\"center\" class=\"head\">Recommended Cutting Speeds For Carbide Drills<\/div>\n<div align=\"center\"><br>\n  Drill Speed is measured by the rate at which the outside diameter of the tool\n  moves in relation to the work piece. This speed is known as Surface Feet Per\n  Minute (SFM) and is shown in the table below. The formula used to convert SFM\n  to Revolutions Per Minute (RPM) is:<br>\n  <br>\n <div class=\"rpm_table\">\n    <div class=\"row\">\n        <div class=\"cell right-align\"><strong>RPM = 3.82 X<\/strong><\/div>\n        <div class=\"cell left-align\"><strong><u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SFM&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/u><\/strong><\/div>\n    <\/div>\n    <div class=\"row\">\n        <div class=\"cell\"><\/div>\n        <div class=\"cell left-align top-align\"><strong>Drill Diam (Inch)<\/strong><\/div>\n    <\/div>\n<\/div>\n\n  <br>\n  The speeds shown in this table are a generalization and it is recommended that\n  the user start at the lower end of the range and build up to the maximum after\n  trial indicates this is possible.<br>\n  <br>\n<\/div>\n<form name=\"frmSelect\" method=\"post\" action=\"\" data-trp-original-action=\"\">\n  <div align=\"center\">\n    <table width=\"50%\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\">\n      <tr>\n        <td><div align=\"center\"><strong>Fractional Size<\/strong><\/div><\/td>\n        <td><div align=\"center\"><strong>Number Size <\/strong><\/div><\/td>\n        <td><div align=\"center\"><strong>Letter Size <\/strong><\/div><\/td>\n      <\/tr>\n      <tr>\n        <td><div align=\"center\">\n            <select name=\"lstFrac\" id=\"lstFrac\" onchange=\"frac_calc(this.value,1);\">\n              <option value=\"\"><\/option>\n              <option value=\"0.0156\">1\/64<\/option>\n              <option value=\"0.0313\">1\/32<\/option>\n              <option value=\"0.0469\">3\/64<\/option>\n              <option value=\"0.0781\">5\/64<\/option>\n              <option value=\"0.0938\">3\/32<\/option>\n              <option value=\"0.1094\">7\/64<\/option>\n              <option value=\"0.1406\">9\/64<\/option>\n              <option value=\"0.1563\">5\/32<\/option>\n              <option value=\"0.1719\">11\/64<\/option>\n              <option value=\"0.2031\">13\/64<\/option>\n              <option value=\"0.2188\">7\/32<\/option>\n              <option value=\"0.2344\">15\/64<\/option>\n              <option value=\"0.2500\" selected>1\/4<\/option>\n              <option value=\"0.2656\">17\/64<\/option>\n              <option value=\"0.2813\">9\/32<\/option>\n              <option value=\"0.2969\">19\/64<\/option>\n              <option value=\"0.3125\">5\/16<\/option>\n              <option value=\"0.3281\">21\/64<\/option>\n              <option value=\"0.3438\">11\/32<\/option>\n              <option value=\"0.3594\">23\/64<\/option>\n              <option value=\"0.3750\">3\/8<\/option>\n              <option value=\"0.3906\">25\/64<\/option>\n              <option value=\"0.4063\">13\/32<\/option>\n              <option value=\"0.4219\">27\/64<\/option>\n              <option value=\"0.4375\">7\/16<\/option>\n              <option value=\"0.4531\">29\/64<\/option>\n              <option value=\"0.4688\">15\/32<\/option>\n              <option value=\"0.4844\">31\/64<\/option>\n              <option value=\"0.5000\">1\/2<\/option>\n              <option value=\"0.5156\">33\/64<\/option>\n              <option value=\"0.5313\">17\/32<\/option>\n              <option value=\"0.5469\">35\/64<\/option>\n              <option value=\"0.5625\">9\/16<\/option>\n              <option value=\"0.5781\">37\/64<\/option>\n              <option value=\"0.5938\">19\/32<\/option>\n              <option value=\"0.6094\">39\/64<\/option>\n              <option value=\"0.6250\">5\/8<\/option>\n              <option value=\"0.6406\">41\/64<\/option>\n              <option value=\"0.6563\">21\/32<\/option>\n              <option value=\"0.6719\">43\/64<\/option>\n              <option value=\"0.6875\">11\/16<\/option>\n              <option value=\"0.7031\">45\/64<\/option>\n              <option value=\"0.7188\">23\/32<\/option>\n              <option value=\"0.7344\">47\/64<\/option>\n              <option value=\"0.7500\">3\/4<\/option>\n              <option value=\"0.7656\">49\/64<\/option>\n              <option value=\"0.7813\">25\/32<\/option>\n              <option value=\"0.7969\">51\/64<\/option>\n              <option value=\"0.8125\">13\/16<\/option>\n              <option value=\"0.8281\">53\/64<\/option>\n              <option value=\"0.8438\">27\/32<\/option>\n              <option value=\"0.8594\">55\/64<\/option>\n              <option value=\"0.8750\">7\/8<\/option>\n              <option value=\"0.8906\">57\/64<\/option>\n              <option value=\"0.9063\">29\/32<\/option>\n              <option value=\"0.9219\">59\/64<\/option>\n              <option value=\"0.9375\">15\/16<\/option>\n              <option value=\"0.9531\">61\/64<\/option>\n              <option value=\"0.9688\">31\/32<\/option>\n              <option value=\"0.9844\">63\/64<\/option>\n              <option value=\"1.0000\">1&#8243;<\/option>\n              <option value=\"1.1250\">1-1\/8<\/option>\n              <option value=\"1.2500\">1-1\/4<\/option>\n              <option value=\"1.3750\">1-3\/8<\/option>\n              <option value=\"1.5000\">1-1\/2<\/option>\n              <option value=\"1.6250\">1-5\/8<\/option>\n              <option value=\"1.7500\">1-3\/4<\/option>\n              <option value=\"1.8750\">1-7\/8<\/option>\n              <option value=\"2.0000\">2&#8243;<\/option>\n              <option value=\"2.1250\">2-1\/8<\/option>\n              <option value=\"2.2500\">2-1\/4<\/option>\n              <option value=\"2.3750\">2-3\/8<\/option>\n              <option value=\"2.5000\">2-1\/2<\/option>\n              <option value=\"2.6250\">2-5\/8<\/option>\n              <option value=\"2.7500\">2-3\/4<\/option>\n              <option value=\"2.8750\">2-7\/8<\/option>\n              <option value=\"3.0000\">3&#8243;<\/option>\n            <\/select>\n          <\/div><\/td>\n        <td><div align=\"center\">\n            <select name=\"lstNumber\" id=\"lstNumber\" onchange=\"frac_calc(this.value,2);\">\n              <option value=\"\" selected><\/option>\n              <option value=\"0.0135\">#80<\/option>\n              <option value=\"0.0145\">#79<\/option>\n              <option value=\"0.0160\">#78<\/option>\n              <option value=\"0.0180\">#77<\/option>\n              <option value=\"0.0200\">#76<\/option>\n              <option value=\"0.0210\">#75<\/option>\n              <option value=\"0.0225\">#74<\/option>\n              <option value=\"0.0240\">#73<\/option>\n              <option value=\"0.0250\">#72<\/option>\n              <option value=\"0.0260\">#71<\/option>\n              <option value=\"0.0280\">#70<\/option>\n              <option value=\"0.0292\">#69<\/option>\n              <option value=\"0.0310\">#68<\/option>\n              <option value=\"0.0320\">#67<\/option>\n              <option value=\"0.0330\">#66<\/option>\n              <option value=\"0.0350\">#65<\/option>\n              <option value=\"0.0360\">#64<\/option>\n              <option value=\"0.0370\">#63<\/option>\n              <option value=\"0.0380\">#62<\/option>\n              <option value=\"0.0390\">#61<\/option>\n              <option value=\"0.0400\">#60<\/option>\n              <option value=\"0.0410\">#59<\/option>\n              <option value=\"0.0420\">#58<\/option>\n              <option value=\"0.0430\">#57<\/option>\n              <option value=\"0.0465\">#56<\/option>\n              <option value=\"0.0520\">#55<\/option>\n              <option value=\"0.0550\">#54<\/option>\n              <option value=\"0.0595\">#53<\/option>\n              <option value=\"0.0635\">#52<\/option>\n              <option value=\"0.0670\">#51<\/option>\n              <option value=\"0.0700\">#50<\/option>\n              <option value=\"0.0730\">#49<\/option>\n              <option value=\"0.0760\">#48<\/option>\n              <option value=\"0.0785\">#47<\/option>\n              <option value=\"0.0810\">#46<\/option>\n              <option value=\"0.0820\">#45<\/option>\n              <option value=\"0.0860\">#44<\/option>\n              <option value=\"0.0890\">#43<\/option>\n              <option value=\"0.0935\">#42<\/option>\n              <option value=\"0.0960\">#41<\/option>\n              <option value=\"0.0980\">#40<\/option>\n              <option value=\"0.0995\">#39<\/option>\n              <option value=\"0.1015\">#38<\/option>\n              <option value=\"0.1040\">#37<\/option>\n              <option value=\"0.1065\">#36<\/option>\n              <option value=\"0.1100\">#35<\/option>\n              <option value=\"0.1110\">#34<\/option>\n              <option value=\"0.1130\">#33<\/option>\n              <option value=\"0.1160\">#32<\/option>\n              <option value=\"0.1200\">#31<\/option>\n              <option value=\"0.1285\">#30<\/option>\n              <option value=\"0.1360\">#29<\/option>\n              <option value=\"0.1405\">#28<\/option>\n              <option value=\"0.1440\">#27<\/option>\n              <option value=\"0.1470\">#26<\/option>\n              <option value=\"0.1495\">#25<\/option>\n              <option value=\"0.1520\">#24<\/option>\n              <option value=\"0.1540\">#23<\/option>\n              <option value=\"0.1570\">#22<\/option>\n              <option value=\"0.1590\">#21<\/option>\n              <option value=\"0.1610\">#20<\/option>\n              <option value=\"0.1660\">#19<\/option>\n              <option value=\"0.1695\">#18<\/option>\n              <option value=\"0.1730\">#17<\/option>\n              <option value=\"0.1770\">#16<\/option>\n              <option value=\"0.1800\">#15<\/option>\n              <option value=\"0.1820\">#14<\/option>\n              <option value=\"0.1850\">#13<\/option>\n              <option value=\"0.1890\">#12<\/option>\n              <option value=\"0.1910\">#11<\/option>\n              <option value=\"0.1935\">#10<\/option>\n              <option value=\"0.1960\">#9<\/option>\n              <option value=\"0.1990\">#8<\/option>\n              <option value=\"0.2010\">#7<\/option>\n              <option value=\"0.2040\">#6<\/option>\n              <option value=\"0.2055\">#5<\/option>\n              <option value=\"0.2090\">#4<\/option>\n              <option value=\"0.2130\">#3<\/option>\n              <option value=\"0.2210\">#2<\/option>\n              <option value=\"0.2280\">#1<\/option>\n            <\/select>\n          <\/div><\/td>\n        <td><div align=\"center\">\n            <select name=\"lstLetter\" id=\"lstLetter\" onchange=\"frac_calc(this.value,3);\">\n              <option value=\"\" selected><\/option>\n              <option value=\"0.2340\">UN<\/option>\n              <option value=\"0.2380\">B<\/option>\n              <option value=\"0.2420\">C<\/option>\n              <option value=\"0.2460\">D<\/option>\n              <option value=\"0.2500\">E<\/option>\n              <option value=\"0.2570\">F<\/option>\n              <option value=\"0.2610\">G<\/option>\n              <option value=\"0.2660\">H<\/option>\n              <option value=\"0.2720\">je<\/option>\n              <option value=\"0.2770\">J<\/option>\n              <option value=\"0.2810\">K<\/option>\n              <option value=\"0.2900\">L<\/option>\n              <option value=\"0.2950\">M<\/option>\n              <option value=\"0.3020\">N<\/option>\n              <option value=\"0.3160\">O<\/option>\n              <option value=\"0.3230\">P<\/option>\n              <option value=\"0.3320\">Q<\/option>\n              <option value=\"0.3390\">R<\/option>\n              <option value=\"0.3480\">S<\/option>\n              <option value=\"0.3580\">T<\/option>\n              <option value=\"0.3680\">Tu<\/option>\n              <option value=\"0.3770\">V<\/option>\n              <option value=\"0.3860\">L<\/option>\n              <option value=\"0.3970\">X<\/option>\n              <option value=\"0.4040\">Y<\/option>\n              <option value=\"0.4130\">Z<\/option>\n            <\/select>\n          <\/div><\/td>\n      <\/tr>\n    <\/table>\n  <\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"fr\"\/><\/form>\n<div align=\"center\"><br>\n<form name=\"frmValues\" method=\"post\" action=\"\" data-trp-original-action=\"\">\n  <table width=\"90%\" border=\"1\" cellpadding=\"5\" cellspacing=\"0\" bordercolor=\"#000000\" bgcolor=\"#FFFFFF\">\n    <tr class=\"dark-red-row\">\n      <td> <div align=\"center\"><font color=\"#FFFFFF\"><strong>Material<\/strong><\/font><\/div><\/td>\n      <td> <div align=\"center\"><font color=\"#FFFFFF\"><strong>Hardness Rc <\/strong><\/font><\/div><\/td>\n      <td> <div align=\"center\"><font color=\"#FFFFFF\"><strong>Speed SFM<\/strong><\/font><\/div><\/td>\n      <td> <div align=\"center\"><font color=\"#FFFFFF\"><strong>Speed RPM<\/strong><\/font><\/div><\/td>\n    <\/tr>\n    <tr class=\"gray-row\">\n      <td colspan=\"4\" align=\"left\" valign=\"top\"><strong>Steel<\/strong><br> <\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Mild Steel <\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<\/div><\/td>\n      <td><div align=\"center\">300<br>\n        <\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row1\" value=\"'+num1row1+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Plain Carbon<\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<br>\n        <\/div><\/td>\n      <td><div align=\"center\">300\n        <\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row2\" value=\"'+num1row2+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Alloyed<\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&lt;30<br>\n        <\/div><\/td>\n      <td><div align=\"center\">260\n        <\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row3\" value=\"'+num1row3+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Alloyed (Hardened &amp; Tempered)<\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">30-38<br>\n        <\/div><\/td>\n      <td><div align=\"center\">215\n        <\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row4\" value=\"'+num1row4+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Alloyed (Hardened &amp; Tempered)<\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">38-45<br>\n        <\/div><\/td>\n      <td><div align=\"center\">170\n        <\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row5\" value=\"'+num1row5+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr class=\"gray-row\">\n      <td colspan=\"4\" align=\"left\" valign=\"top\"><strong>Cast Iron<\/strong><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Cast Iron<\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<\/div><\/td>\n      <td><div align=\"center\">300<\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row8\" value=\"'+num1row8+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr class=\"gray-row\">\n      <td colspan=\"4\" align=\"left\" valign=\"top\"><strong>Titanium<\/strong><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Alloys (Annealed)<br><\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<\/div><\/td>\n      <td><div align=\"center\">130<\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row6\" value=\"'+num1row6+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Alloys (Treated), Inconel <\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<\/div><\/td>\n      <td><div align=\"center\">60<\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row7\" value=\"'+num1row7+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td colspan=\"4\" align=\"left\" valign=\"top\" class=\"gray-row\"><strong>Aluminum\n        &#8211; Magnesium<\/strong><br><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Aluminium<br><\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<\/div><\/td>\n      <td><div align=\"center\">600\n        <\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row9\" value=\"'+num1row9+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Magnesium<\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<\/div><\/td>\n      <td><div align=\"center\">600<\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row10\" value=\"'+num1row10+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td colspan=\"4\" align=\"left\" valign=\"top\" class=\"gray-row\"><strong>Plastique<\/strong><br><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Graphite Composite<br><\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<br>\n        <\/div><\/td>\n      <td><div align=\"center\">210<\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row11\" value=\"'+num1row11+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Epoxy Fibre <\/td>\n      <td align=\"left\" valign=\"top\"><div align=\"center\">&nbsp;<br>\n        <\/div><\/td>\n      <td><div align=\"center\">210<\/div><\/td>\n      <td><div align=\"center\">\n          <script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row12\" value=\"'+num1row12+'\">');<\/script>\n        <\/div><\/td>\n    <\/tr>\n    <tr>\n      <td align=\"left\" valign=\"top\">Acrylic<\/td>\n      <td align=\"left\" valign=\"top\">&nbsp;<\/td>\n      <td><div align=\"center\">160<\/div><\/td>\n      <td><div align=\"center\"><script>document.write('<input readonly=\"\" class=\"newone\" type=\"text\" name=\"row13\" value=\"'+num1row13+'\">');<\/script>\n<\/div>\n<\/td>\n    <\/tr>\n  <\/table>\n  <input type=\"hidden\" name=\"trp-form-language\" value=\"fr\"\/><\/form>\n  <br>\n  <span class=\"head\">Recommended Feeds For Drilling<\/span><br>\n  <br>\n  <table width=\"90%\"  border=\"1\" cellpadding=\"5\" cellspacing=\"0\" bordercolor=\"#000000\">\n    <tr class=\"dark-red-row\">\n      <td width=\"33%\"><div align=\"center\"><span class=\"style1\">Drill Diameter <\/span><\/div><\/td>\n      <td width=\"33%\"><div align=\"center\"><span class=\"style1\">Feed (Inch\/Revolution)<\/span><\/div><\/td>\n    <\/tr>\n    <tr bgcolor=\"#FFFFFF\">\n      <td><div align=\"center\">\n        <table cellspacing=\"0\" cellpadding=\"0\">\n            <tr>\n              <td colspan=\"3\" class=\"xl28\" width=\"300\"><div align=\"center\">1\/16 &#8211; 3\/32 <\/div><\/td>\n            <\/tr>\n            <tr>\n              <td colspan=\"3\" class=\"xl25\"><div align=\"center\">1\/8 &#8211; 5\/32 <\/div><\/td>\n            <\/tr>\n            <tr>\n              <td colspan=\"3\" class=\"xl25\"><div align=\"center\">3\/16 &#8211; 7\/32 <\/div><\/td>\n            <\/tr>\n            <tr>\n              <td colspan=\"3\" class=\"xl25\"><div align=\"center\">1\/4 &#8211; 5\/16 <\/div><\/td>\n            <\/tr>\n            <tr>\n              <td colspan=\"3\" class=\"xl26\"><div align=\"center\">3\/8 &#8211; 7\/16 <\/div><\/td>\n            <\/tr>\n            <tr>\n              <td colspan=\"3\" class=\"xl26\"><div align=\"center\">1\/2 &#8211; 9\/16 <\/div><\/td>\n            <\/tr>\n            <tr>\n              <td colspan=\"3\" class=\"xl25\"><div align=\"center\">5\/8 &#8211; 3\/4 <\/div><\/td>\n            <\/tr>\n            <tr>\n              <td colspan=\"3\" class=\"xl22\"><div align=\"center\">7\/8 &#8211; 1&quot; <\/div><\/td>\n            <\/tr>\n              <\/table>\n      <\/div><\/td>\n      <td><table align=\"center\" cellpadding=\"0\" cellspacing=\"0\">\n        <tr>\n          <td colspan=\"2\" class=\"xl28\" width=\"230\"><div align=\"center\">.001 &#8211; .003 <\/div><\/td>\n        <\/tr>\n        <tr>\n          <td colspan=\"2\" class=\"xl26\"><div align=\"center\">.002 &#8211; .005 <\/div><\/td>\n        <\/tr>\n        <tr>\n          <td colspan=\"2\" class=\"xl26\"><div align=\"center\">.003 &#8211; .006 <\/div><\/td>\n        <\/tr>\n        <tr>\n          <td colspan=\"2\" class=\"xl26\"><div align=\"center\">.004 &#8211; .008 <\/div><\/td>\n        <\/tr>\n        <tr>\n          <td colspan=\"2\" class=\"xl26\"><div align=\"center\">.005 &#8211; .010 <\/div><\/td>\n        <\/tr>\n        <tr>\n          <td colspan=\"2\" class=\"xl26\"><div align=\"center\">.007 &#8211; .012 <\/div><\/td>\n        <\/tr>\n        <tr>\n          <td colspan=\"2\" class=\"xl26\"><div align=\"center\">.010 &#8211; .015 <\/div><\/td>\n        <\/tr>\n        <tr>\n          <td colspan=\"2\" class=\"xl24\"><div align=\"center\">.015 &#8211; .020 <\/div><\/td>\n        <\/tr>\n      <\/table><\/td>\n    <\/tr>\n  <\/table>\n  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