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Special Driver (From a Book with a Special Price)

By Thomas LaMance

Modelmakers and toolroom machinists often find it necessary to improvise special lathe dog drivers when setting up precision jobs on lathes and milling machines. The special driver is designed to prevent chattering and undue backlash when machining light work betweeen centers, using either the conventional dog or the clamp-type toolmaker’s dog. It is made from a short piece of 3/8– flat steel and is center-drilled and taper-reamed to fit the live center at the top end of the taper.

It is then slotted through from one end to the tapered hole and is cross-drilled and tapped for a cap screw to provide a clamping action. A slightly oversize hole drilled near the opposite end takes the tail of the dog.

The above tip is an excerpt from the Village Press book Readers’ Tipbook 2.

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