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Tips: Tight Quill Solution
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Tight Quill Solution

 

Forstner bits are useful to quickly remove excess wood when starting a turning; however, they create significant torque compared to a live center. As the quill is retracted and the drill bit drawn out of the wood under pressure, the threads on the stop screw act as a rake and drag metal toward the outer edge of the quill notch. The resulting burr drags on the inside wall of the quill housing, causing tight movement of the quill.

 

If the quill on your tailstock is hard to extend, and cleaning and oiling it did not solve the problem, try this quick fix. Extend the quill and check the quill notch for a burr along the lower edge (red line in photo). Take a diamond card file and lightly file the edge of the notch to remove the burr. Wipe the surface clean and re-oil the quill. If you do a lot of work with Forstner bits, file a little more aggressively to put a slight bevel on the lower edge. This will make it harder for a future burr to form.

 

~John Franklin, New York

 




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