I'd like to replace a burned up countersink. What angle is most useful
for general work? 6-flute cobalt sound good?

Single hole, baby! 62 deg?


"Spehro Pefhany" wrote in message
...
I'd like to replace a burned up countersink. What angle is most useful
for general work? 6-flute cobalt sound good?

In article ,
what says...
I'd like to replace a burned up countersink. What angle is most useful
for general work? 6-flute cobalt sound good?



82 degrees for UN flat heads, 90 degrees for metric. I prefer the Ford
type single flute c'sinks for general use.

http://www.maford.com/taf/catalog.taf?category=a11

Ned Simmons

What Ned said. 60 degrees is best for running centers.

Bob Swinney
"Ned Simmons" wrote in message
...
In article ,
what says...
I'd like to replace a burned up countersink. What angle is most useful
for general work? 6-flute cobalt sound good?



82 degrees for UN flat heads, 90 degrees for metric. I prefer the Ford
type single flute c'sinks for general use.

http://www.maford.com/taf/catalog.taf?category=a11

Ned Simmons

On Fri, 17 Feb 2006 20:31:43 -0600, the renowned "Robert Swinney"
wrote:

What Ned said. 60 degrees is best for running centers.

Bob Swinney
"Ned Simmons" wrote in message
...
In article ,
what says...
I'd like to replace a burned up countersink. What angle is most useful
for general work? 6-flute cobalt sound good?



82 degrees for UN flat heads, 90 degrees for metric. I prefer the Ford
type single flute c'sinks for general use.

http://www.maford.com/taf/catalog.taf?category=a11

Ned Simmons

Thanks, gentlemen. I ended up getting the hi-alloy HSS M.A. Ford
single flute type in each of the 3 angles. Works nicely.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

--The only thing I don't like about single flute countersinks is
that they are *very* hard to sharpen. Someone sells a jig to sharpen them
but it costs more than a lifetime supply of countersinks..

--
"Steamboat Ed" Haas : Living on the fringes of
Hacking the Trailing Edge! : most good bell curves...
http://www.nmpproducts.com/intro.htm
---Decks a-wash in a sea of words---