By making your own custom split collet with a 5/8″ outside diameter, this part can hold almost any tool you wish to adapt to it. A set screw tightens on the split collet to hold the tool in place. It is also used to hold the collet adapter (#2085/#2086). The split face design with adjusting screws allows perfect centering of the tool’s tip. This tool holder is designed for the machinist seeking every advantage in the quest for total accuracy. Much like the adjustable chuck holder, holding a tool in perfect alignment in the tailstock without some method of adjusting it can be difficult or impossible.
To achieve perfect centering, these holders are simple to use. The holders are divided into two parts with flanges. These flanges are bolted together with two screws. The clearance holes for these screws allow the front to be adjusted in relation to the rear. The rear section has a witness mark (groove). This mark should always be located at the top so the holder is located the same way in the tailstock each time it is used. This is an economical way to have the accuracy of an adjustable tailstock for those who need it while keeping costs down for those who don’t.
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