"Bob Engelhardt" wrote in message ...

On 8/28/2020 3:33 PM, Leon Fisk wrote:
On Fri, 28 Aug 2020 15:18:23 -0400
Bob Engelhardt wrote:

On 8/28/2020 11:40 AM, wrote:

Some time ago we had a job to turn a 20 inch by 6 foot chunk of steel on
a Monarch lathe with 18.5 inch over the carriage. The first cut was 1
inch deep to get to 18 inch diameter to go over the carriage. The chip
was about 100 feet long before the operator broke it deliberately, deep
and slow pass but it worked perfectly.


I'm missing something - HOW did you turn a 20" piece with 18.5" of
clearance?

Guessing... move carriage to the right of 20" piece. Make sure cutter
is ahead of the carriage and you're cutting off enough material to
clear the carriage as it advances...


That would work. If the tailstock center could extend over the carriage.

==========================================

I've read that the width of the carriage is one of the few disadvantages of
the Hardinge, compared to the South Bend 10L.
http://www.lathes.co.uk/hardinge2/page2.html
http://www.lathes.co.uk/southbend/img11.gif