08-23-2013, 07:33 AM
For future reference,
In 1990 My Dad went to Poland to meet some family and filled his pockets with Eastern block tooling, to this day, my "goto" turning tool is one of the tools he brought back with him, now heavily modified, it is the same brand as that marked on the boring bar above,
The convention with this brand is for the rim of the locking screws to be marked with a series of axially aligned dashes when a left hand thread is used and if no marking is present then it's a right hand thread screw.
I don't know what the brand name is, or where they are made(I suspect an old eastern block or communist country), but my old ones work well and the only complaint is that after many years of industrial service the hex key holes do strip out a bit, but at least they had another in the thread end accessible from the through hole underneath the tool.
So yes this boring bar has a left hand thread which pulls the tip into the socket quite well.
Good ol' Dad brought back a bucket full of tips and chipbreakers, the chipbreakers seemed to run out first but wasn't a big problem as I use a smaller tip with the front edge ground down to a suitable angle.
At the time I was amazed that after 50 years of the iron curtain all of the tools brought back used readily available ISO tip designs.
Regards Rick
In 1990 My Dad went to Poland to meet some family and filled his pockets with Eastern block tooling, to this day, my "goto" turning tool is one of the tools he brought back with him, now heavily modified, it is the same brand as that marked on the boring bar above,
The convention with this brand is for the rim of the locking screws to be marked with a series of axially aligned dashes when a left hand thread is used and if no marking is present then it's a right hand thread screw.
I don't know what the brand name is, or where they are made(I suspect an old eastern block or communist country), but my old ones work well and the only complaint is that after many years of industrial service the hex key holes do strip out a bit, but at least they had another in the thread end accessible from the through hole underneath the tool.
So yes this boring bar has a left hand thread which pulls the tip into the socket quite well.
Good ol' Dad brought back a bucket full of tips and chipbreakers, the chipbreakers seemed to run out first but wasn't a big problem as I use a smaller tip with the front edge ground down to a suitable angle.
At the time I was amazed that after 50 years of the iron curtain all of the tools brought back used readily available ISO tip designs.
Regards Rick
Whatever it is, do it today, Tomorrow may not be an option and regret outlasts fatigue.