Boring Head In Tail Stock

The radius of the tool nose should not be over .010". You don't need anything radical to offset the barrel, as the tailstock off set is only about .160", so I've never seen the need for a ball center. When you get down close to size, you may be tempted to slow down the feed for a better finish.......DON'T! Just take another free pass with no tool advancement and finish with a belt sander. It never fails when you take a pass with slower feed it will cause a radical finish with deep rings in several places.
 
You desire to do this?
The offset is .168" which yields .400 deg. or .800 deg. included angle, this should not pose a problem between centers. If you do use a boring head lock the gib adjusting screws down hard after having moved it to position.
Good Luck, that material turns beautiful finishes.

As mentioned above do not try a light DOC and Feed finishing pass, since you are only doing this for weight savings. af you get an excellent finish at say .910 don't try and take the last .005 off, use flood coolant.
24inchtaper_zpsjluwnoop.jpg
 
Thanks WW, that's exactly what I want to do :)
Flood coolant is lacking on my lathe. Would cutting oil work as a substitute if I brushed it on heavy?
 
Also, what happens to the finish at the end of the pass when DOC gradually thins out to zero?
 
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These are the 2 i use, tailstock is dead, headstock is a ball for a lot of off set, dog the piece using a face plate.

View attachment 129518

KE,
I've got a dumb question. It seems to me that it would be critical to keep the part level between centers. How do you accomplish that with your tailstock offset tool ?

Thanks

Ted
 
run an indicator on top the length of the part before off setting it, and take the same hight on the tailstock end after off settting it?
 
run an indicator on top the length of the part before off setting it, and take the same hight on the tailstock end after off settting it?
Ya, I understand using a dial indicator to get the part level, but what I wasn't understanding is how KE was leveling the part with the Morse taper in the tail stock. But, after studying his photo a little more, I see that he has what appears to be an adjustment knob to raise and lower the height of the center on his tool. Now it makes sense to me.

Ted
 
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