Reply by Madmark2

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Posted on What is this? had it for 40 years

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1813 posts in 1502 days

#1 posted 09-29-2020 08:52 PM

They’re not as dangerous as they look. You would normally hold the workpiece with the left hand as you feed the tailstock crank with the right. If the bit tries to gall, the sides of the V keep it from climbing and spinning.

The slight center countersink allows thru drilling without hitting metal with the drill bit.

Being that close to the chuck could easily be a knuckle buster tho.

-- The hump with the stump and the pump!

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