On Mon, 12 Dec 2011 12:46:02 -0600, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:
Greetings Lloyd,
I use my fingers on the OUTSIDE of the part. Not on the bar. That's
why the use of a piece of leather. And then oil on the part. Putting
some sort of vibration dampening at the point of vibration generation
seems to work best.
Eric
fired this volley in
:

It does wear out your fingers so holding a small piece of leather or
wearing a leather glove helps. I know this can be dangerous. I
probably wouldn't let someone do the above in my shop. But I do do it.


The problems with that are the following:

1) the "finger technique" works fine when you can grip the boring bar
fairly near the cutter. I do it all the time. It does not do much good
if you have to grip it 3/4-way back to the tool rest.

2) I'd have to reach about a foot into a spinning workpiece without being
able to clearly see my hand/fingers, and also would then have only one
hand left to run the machine (from an odd body position).

I don't think I'm quite ready for that. G

I have quite nearly given up on this workpiece. Although it will cost me
"an arm and a leg" (though not as quickly as the above method), I believe
I'm going to settle for the wait time to purchase a body tube for a large
pneumatic cylinder.

I made a really beefy (3" steel tube) boring bar, and found only that the
flex in my compound/cross slide is still too much to keep the bit from
singing excessively.

LLoyd