[Shop-talk] What is this?

[Pat Horne]

It looks like the guts of the chuck on a wood boring brace. The spring is there to open the jaws so you can put in the bit. There are probably also wear marks across the piece on the opposite end from the spring on the angled part. Do a search for “brace and bit”. 

Peace,
Pat

Pat Horne 
We support Caldwell County Habitat for Humanity


On Nov 5, 2018, at 5:17 PM, Steven Trovato <strovato at optonline.net> wrote:

Hi.  Found this in a tool box.  Does anyone know what this is?  The only thing holding these two pieces together is a V-shaped spring.  You can see the end of the spring coming through a small hole at the bottom of the picture.  There is an equivalent hole for the other end of the spring on the other jaw. There are black deposits as well as metal deposits on this, as well as some sort of grinder marks, perhaps cleaning this thing up after use.  It looks like most of the wear is toward the joined end.  The whole thing is about 2.5 inches long.  Any thoughts on what this is?

-Steve T.

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