4-Jaw Chuck

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chiliviking

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I completed the 4-jaw chuck for my PM Lathe project. I modified some of the dimensions as I thought the specs. called out in the drawing had the jaws sticking out of the body too far so I shortened them by about .060 and then made the steps in the jaws .070 each rather than the .090 on the print. I think it now looks more in proportion.

Here is the setup I used to cut the 45 degree faces for the jaws. The angle plate is something I made a few years ago and it has served me well for many projects. It doesn't have a scale on it, I put angle blocks on it for the desired angle and then indicate it in with a DTI.




The finished chuck both looks nice and would work fine if a person was inclined to actually use it!

 

mklotz

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Good work. Looks great.

Don't forget to make a chuck key for it. I ground off a bit of hex wrench and made a fitting for it with a T-handle.
I also made a similar wrench for the setscrew that secures the offset back gear pivot.

I intended to make a four-way tool post for it but decided that would be an anachronism for this era and, besides, the lantern style specified in the plans looks very cool once made.
 

BobWarfield

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Well now you've gone and done it. How the heck are you going to make the DTI to dial in that little chuck? :big:

Very cool chuck. :bow:

Cheers,

BW
 

Bernd

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WOW Nice looking chuck. Great maching work there Chiliviking.

Bernd
 

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