Karl Townsend wrote:

"T.Alan Kraus" wrote in message
...

What is the procedure for broaching on a lathe? I thought it was done
using
a press. Since I have no experience with the procedure, could you be more
specific?



This is easy to show, hard to describe. In this case, for 1/4" square, mount
a 1/4" tool bit in a tool holder so its aligned with the axis of the lathe.
Sharpen bit so it cuts on one side. With the lathe off, and your part held
in a faceplate, four jaw, or whatever, rock the carriage back and forth.
Move cross slide to incease depth of cut. I've seen an article on this
somewhare, maybe someone can post a link.

Same idea can also be done on the mill, but the quill lever is nowhere near
as stout. easy to break something in your mill.

Karl





It's a good 'trick' for occasional light use. When doing this, you are
basically using the lathe as a shaper, or slotter (a specialized
shaper). The lathe's moving carriage becomes, in effect, the ram of the
shaper.

Dan Mitchell
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