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The 6" 4-jaw chuck had a type A2-5 short taper mounting, but I needed it to fit an adapter I had made to the back of the 5" 3 jaw chuck I have.
TO do this all I needed to do was to make a 0.125" deep bore 3.875" in diameter into the back of the 4-jaw chuck then drill and thread the adapter to accept the mounting bolts.
Attachment 41682
bore completed
Attachment 41683
the adapter is a tap on fit
Attachment 41684
Drilling the adapter
Attachment 41685
Completed
Attachment 41686
Attachment 41687
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Thanks Frank S! We've added your Chuck Mount Modification to our Machining category,
as well as to your builder page: Frank S's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-chuck-mount-modification"> <img src="/uploads/253285/homemade-chuck-mount-modification.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-chuck-mount-modification">Chuck Mount Modification</a> <span> by <a href="https://www.homemadetools.net/builder/Frank+S">Frank S</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/chuck'>chuck</a>, <a href='https://www.homemadetools.net/tag/mount'>mount</a> </div> </div> </div> </div>
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Few realize handy aspect of temporarily mounting a small chuck in a larger machine, especially an independent 4 jaw.
