Boring Bar in Toolholder

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SteveHGraham
Posts: 7367
Joined: Sat Jan 17, 2009 7:55 pm
Location: Florida

Re: Boring Bar in Toolholder

Post by SteveHGraham » Tue Dec 06, 2011 7:02 pm

That's clever.
Every hard-fried egg began life sunny-side up.

J.Ramsey
Posts: 139
Joined: Wed Jul 25, 2007 12:19 pm
Location: S/E Kansas

Re: Boring Bar in Toolholder

Post by J.Ramsey » Wed Dec 07, 2011 10:13 am

wlw-19958 wrote: Anyway, I've read about using a boring head in the tailstock to hold a center and
thus creating a way to off-set the tailstock center for taper turning. It sounds
like a creative way to do precision off-setting without having to off-set the upper
half of the tailstock itself. I haven't used this method myself because I have a
taper attachment on my lathe.
Here ya go.
Attachments
setup.jpg
turning.jpg
finishing up.jpg
finished2.jpg

J.Ramsey
Posts: 139
Joined: Wed Jul 25, 2007 12:19 pm
Location: S/E Kansas

Re: Boring Bar in Toolholder

Post by J.Ramsey » Wed Dec 07, 2011 10:40 am

Here's a couple tips/tricks I've learned using this setup.

Turn and harden a pair of ball nosed centers,standard 60 degree centers don't work very well in a 60 degree center drilled hole that is offset.The ball end center will run fine in the the center drilled hole.
I add a drop of oil on the centers and check tailstock tension frequently while turning.

Other than the 1.000 x 11" Aluminum piece pictured in the above post (I was showing a buddy how to do it) I use the steady rest I made to support the boring head to remove the flexing that's caused by the combined length of the live center and boring head.
Attachments
ball centers.jpg
steady.jpg

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SteveHGraham
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Location: Florida

Re: Boring Bar in Toolholder

Post by SteveHGraham » Wed Dec 07, 2011 10:43 am

That's neat. I was wondering how the offset affected the pointed centers, and you answered the question.
Every hard-fried egg began life sunny-side up.

stevec
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Joined: Thu Oct 21, 2010 12:40 pm
Location: N.S. Canada

Re: Boring Bar in Toolholder

Post by stevec » Wed Dec 07, 2011 1:58 pm

I agree Steve and also nice job on the steady rest J.Ramsey :wink:

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