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      <title>Counterbore</title>
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      <div class="title_topic4" id="xps10_pagetitle">Counterbore</div>
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      <p class="para_topic">Counterbores are rotary, often pilot guided, end cutting tools having one or more cutting tips and usually having straight or helical flutes. They are used for enlarging holes for a limited depth. </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">(D) Diameter</p>
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               <p class="para_td">This parameter represents the diameter of the counterboring tool.</p>
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               <p class="para_td">(L) Length</p>
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               <p class="para_td">Maximum length that can be used for machining. </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">(PD) Pilot Diameter</p>
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               <p class="para_td">This parameter is the Diameter of the pilot.</p>
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               <p class="para_td">(PL) Pilot Length</p>
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               <p class="para_td">This parameter is the length of the pilot.</p>
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               <p class="para_td">Number of Flutes</p>
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               <p class="para_td">This parameter should be included so that the feed rate can be calculated and may range from two flutes to more.</p>
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