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      <title>Step Drill</title>
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      <div class="title_topic4" id="xps10_pagetitle">Step Drill</div>
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      <p class="para_topic">Step drills have two or more diameters ground into lands of the drill. Normally the drill will be of the two flute style, although it is possible to have three or four flute step drills. The various diameters of steps, separated from each others cutting edges, conform to the designed shape in the part. Step drills are often used to drill holes to close tolerances, sometimes eliminating the need for subsequent reaming operations. </p>
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               <p class="para_th">Tool Parameters</p>
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               <p class="para_th">Description</p>
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               <p class="para_td">(TD) Tip Diameter</p>
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               <p class="para_td">Smallest diameter of the tool adjacent to the tool tip.</p>
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               <p class="para_td">(TL) Tip Length</p>
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               <p class="para_td">Length of the first step.</p>
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               <p class="para_td">(PA) Point Angle</p>
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               <p class="para_td">Included angle at the tip end of the tool.</p>
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               <p class="para_td">(CR) Corner Radius</p>
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               <p class="para_td">Radius between the body of the tool and the tip.</p>
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               <p class="para_td">Number of Flutes</p>
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               <p class="para_td">The Step Drill usually has two flutes</p>
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               <p class="para_td">Shoulder Distance</p>
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               <p class="para_td">The distance from the tip of the tool to the widest part of the tool. </p>
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               <p class="para_td">Step Parameters</p>
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               <p class="para_td">Step- Number of additional Steps (up to 10)</p>
               <p class="para_td">(SD) Step Diameter- Diameter of the step</p>
               <p class="para_td">(SL) Step Length- Length of the step</p>
               <p class="para_td">(SA) Step Angle- Included Angle of step measured from the Step Diameter.</p>
               <p class="para_td">(SR) Step Radius- Corner Radius of the Step</p>
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            <td valign="top" align="left"><img align="left" src="../graphics/note.gif" alt="Note" title="Note"></td>
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                  <p class="para_note_body"> The maximum steps are currently limited to 10 steps. &nbsp;</p>
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