broaching stainless steel bar

I need to cut a square hole through a stainless bolt, using it as a lathe tool holder.I have drilled bolt no problem with Cobalt drills. Is it now down to a lot of work with taper files or can I BROACH IT?

Reply to
MATHSMAN
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"MATHSMAN" wrote in message news:25a79$553d560a$43de0cc0$ snipped-for-privacy@news.flashnewsgroups.com...

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Can you drill an oversized hole and clamp the bit between two nuts?

-jsw

Reply to
Jim Wilkins

Here's what a guy on you tube did

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Reply to
Karl Townsend

Stainless is a bit more difficult to machine than regular steel. It generally needs more clearanaces, slower speeds and heavier cuts. My guess is with a broach made for steel, you are likely to break the broach using it on stainless.

You could kludge up an electric discharge machine. Another guy and I did that a long time ago.

Just did a search on EDM DIY and found a number of sites with info.

Dan

Reply to
dcaster

I have the perfect tool for that, a square drill, but you're using the wrong material.

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Reply to
Larry Jaques

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