"Ed Huntress" wrote in message
...
On Sun, 19 May 2013 05:12:13 GMT, "Harold & Susan Vordos"
wrote:


"Ignoramus12664" wrote in message
...
I finally got around and re-adjusted the clutch on the Clausing 6913
lathe. (13x48). The clutch was previously slipping and I could only
make the lightest of cuts.

Now, the clutch no longer slips when engaged, and can still be
disengaged, and I can take much heavier cuts. And what I like the most
is that I can again use power feed.

The problem I had with one piece of metal, is that when I cut it with
power feed and a carbide insert, it would make an endless chip, that
warps and gets everywhere, and it seems to be unsafe. How can I ensure
that this chip breaks?

i


Chip breakers rely on a given amount of feed in order to function
properly.
Rule of thumb is to increase feed when a chip doesn't break.
Do not expect a chip breaker to function with light feeds, or shallow
depths
of cut.

Harold

Good points. And sometimes, don't expect them to work at all.

If Iggy is dealing with some nickel alloy (like stainless), a higher
feedrate will work-harden the chip and help it break. If it's some
dead-soft low-carbon steel, maybe, maybe not.

--
Ed Huntress

I've never failed to break mild steel chips (speaking of roughing---all bets
are off for finish cuts). Increase feed rate until it breaks, If it fails
to do so and you run out of power, decrease the width of the chip breaker,
or increase the depth---anything to cause the chip to curl tighter. Avoid
an abrupt inner corner at the exit, however, so chips can't stack up.

When roughing, mild steel breaks perfectly well when conditions are right.

Harold