I would demand and expect my 1/4" drill bit to not wobble in my drill
press. I realize that the RPM is higher on the router, but the
principle holds true. Maybe I'm just lucky as I've not ever experienced
what you reference. I still suspect that the bit is bent as it doesn't
take much as you move the router around, lay it on its side, etc. I had
a buddy buy some cheap router bits - total waste of time and money. I
have mostly 1/4" shank carbide bits, I expect to pay $20 -- $30 per bit,
I have them resharpened, some are over 20 years old and still work fine.
On 2/18/2015 7:10 AM, Electric Comet wrote:
A two bearing bit, top and bottom, is a convenience thing. It is some
times easier to use one or the other depending on the orientation of the
bit to the work and or pattern.
Typically a straight cut bit with a bearing is a flush cut bit.
Well that is not entirely true. If you are flush cutting veneer or
laminate a 1/4" flush cut bit is more than adequate. and those are
typically bottom bearing bits. In thicker cuts if is best to not cut so
much in a pass that you hear the chatter. At that point your bit is
over loaded with what it can easily handle and does not deliver the
The smaller the diameter of the cutter portion of the bit the faster you
need to run. Once you start using bits that have a 1" or greater cutter
you need to slow down the router speed.
A 1/2" shank bit will typically deliver less chatter however it does not
prevent you from removing too much material. You can still over load a
small diameter cutter on a 1/2" shank bit.
Great cor cutting dado,s with a router and template/straight edge guide.
Not always true.
Look, I am only trying to help you out. If yo want to get into a
pissing contest, you win.
Then you have a defective bit or it is not properly mounted in the router.
I'd just put a dial gauge on it and check for runout (powered off of
course). You could have anything from true bending of the bit, a slightly
dirty collet or sleeve, dodgy bearings, bad seating, or some combination.
2-1/4" for such a bit sounds more like a pattern cutting bit rather than a
standard flush-trim bit but I guess that the difference is more a matter of
degree. I've never seen flexing of even a 1/4"-shank router bit used at
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