"Ignoramus13544" wrote in message
...
On 2010-09-09, Bob La Londe wrote:
"Ignoramus13544" wrote in message
...
Still kind of chicken about running a high speed spindle (a Bosch
router) without coolant. So my question is, do people use coolant at,
say, 10k RPM? 20k? I would say the OD of the spindle nut is 1 inch.

The super fast machines I have seen on You Tube all appear to use
moderately
high volume flood coolant. There are plenty of people who claim they dry
cut at 10-24K, but cutter life suffers. Also sticking happens more often
if
you try to get a little aggressive. I dry cut a lot, but if I care about
the finish of the part I stand there with a can of WD in my hand
(aluminum
only).

Got any links to videos? I was thinking, for starters, 10-15 K RPM,
1/4" cutter.

I

http://www.youtube.com/watch?v=-MmtRetal54

http://www.youtube.com/watch?v=L5aC5Kpvibc

http://www.youtube.com/watch?v=I3ACIOd4Jpw