Yeah, that's the difference between "center cutting" and
"non-center cutting". The non-center cutting are designed
to cut on the side of the mill - the workpiece is moved
under the cutter from the side, as if you were cutting a
groove or rabbet. The center cutting type are designed to
cut on the side or end, so they can be plunged into the
work and then the workpiece moved (e.g. for a stopped
If I remember correctly (unfortunately my machinist friend
passed away earlier this year, so I can't ask him) the non-
end cutting mills clear chips better, so can cut faster in
a production setting. Which is why both kinds exist.
The bigger bushings do not need to flex as much as the smaller bushings.
More cuts in the bushing allow for more adjustment.
I would not be concerned with the single cut bushing.
FWIW my 1/2" bushing/collet has 3 cuts, my 1/4" has 4.
On Friday, July 22, 2016 at 2:10:00 PM UTC-4, Leon wrote:
Thanks for that info.
Do you know of anyone that sells 3/8" shank router bits in standard
profiles, such as round-overs, chamfers, etc?
Remember, you started me down this Rocky Road, so you're on the hook
to help me get the most out of this tool. ;-)
So here's the thing, many metal working milling bits are 3/8"
and WAY cheaper than woodworking bits.
So you can use them. They have 2 flute, 4 flute, some rare 3 flute.
ball end, flat, etc...
So I would say it is and can be useful.
It's whether you will venture to metal working suppliers.. OBTW, the
prices to Metal workers, is much less than the price to WW for the same
I bought a 3/8 collet for my big Milwaukee in my router table for the
express purpose of using 3/8" milling bits. I've broken enough $$$ 1/2"
shank, 3/8" spiral cut router bits to appreciate inexpensive and damn
sharp HSS milling bits.
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