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?

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"MATHSMAN" wrote in
message oups.com...
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?

http://www.mscdirect.com/browse/tn/H...navid=12106096

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

-jsw

On Sun, 26 Apr 2015 21:18:02 +0000, MATHSMAN
wrote:

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?

Here's what a guy on you tube did
https://www.youtube.com/watch?v=7n1r5XfVkyk

On Sunday, April 26, 2015 at 5:18:04 PM UTC-4, MATHSMAN wrote:
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?

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

On Sun, 26 Apr 2015 21:18:02 +0000, MATHSMAN
wrote:

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?

I have the perfect tool for that, a square drill, but you're using the
wrong material. http://tinyurl.com/k45cujk

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of the people by gradual and silent encroachments of those in power
than by violent and sudden usurpations."
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