I've had similar problems. First make sure the "T" type parting tool
is absolutely perpendicular to the work because that type tool has no
side relief. Try lowering the tool a few thousandths below center.
A tool ground from square stock (a lot of grinding) with side reliefs
tends to work better for me, but has some limitation on cutting depth.
Parting off is, to me, difficult and slowing the lathe down as is
necessary for such operations reduces motor power.
Craig
--- In 7x12minilathe@..., "bbftx <bflint@a...>"
<bflint@a...> wrote:
WD
How big a diameter are you trying to part off? A lot of people
have difficulties with this. It gets dicey on my 7x12 on anything
more than 1-1/8" in diameter. I seem to get the best results
slowing the rpms way down, as low as I can go with the speed
control. Also, I make sure I have as little of the parting tool
as possible hanging out from the tool holder.
B Flint
--- In 7x12minilathe@..., "wdannhardt <wdannhardt@y...>"
<wdannhardt@y...> wrote:
The only tool I have problems with is
the cut off tool.
I am using a .062" x .5" HSS tool, cutting brass and Aluminum. I
always seem to get terrible chatter. I made sure the saddle,
cross
slide and compound are very tight to the ways, but it still
happens.
Does anyone have any suggestions to make this better?
I've not heard of anyone else complain about this, so I think it
must be something I am doing.
WD
