On Thu, 13 Sep 2012 14:25:30 -0700 (PDT), whit3rd
wrote:

On Monday, September 10, 2012 7:06:49 PM UTC-7, Tom Gardner wrote:
I have a 7.5 hp 36" Tannewitz vertical band saw [for wood]
Could I put a VFD on it to cut metal?

Yes, but to set a VFD to 1/10 speed (about what the steel-cutting
recommendation is) you'll get similar motor torque and current limits,
but lower speed and voltage. That means torque x speed,
or equivalently current x voltage, is about 1/10 of the
'7.5 hp' rating, and you'd be cutting with effectively three
quarters horsepower.

Not bad, actually; you don't WANT to zip through steel like
it was hardwood. Handling steel stock that needs a 36" throat
is gonna be a team-building experience.

Indeed!!!


--
"Confronting Liberals with the facts of reality is very much akin to
clubbing baby seals. It gets boring after a while, but because Liberals are
so stupid it is easy work." Steven M. Barry