What is the performance and or application difference between router straight bits with a single flute and a double flute? Why two diff bits that do the same thing?

joe2 wrote:
What is the performance and or application difference between router
straight bits with a single flute and a double flute? Why two diff
bits that do the same thing?

1. single flute cuts rougher but heat up less.

2. single flute bits are usually plunge bits


--
dadiOH
____________________________

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"joe2" wrote in message
...

What is the performance and or application difference between router
straight bits with a single flute and a double flute? Why two diff
bits that do the same thing?

I asked the same question after buying some single flute at an auction. I
was told they were for corian, which makes sense since I bought some corian
at the same auction.

"joe2" wrote in message
...

What is the performance and or application difference between router
straight bits with a single flute and a double flute? Why two diff
bits that do the same thing?

Oddly the single flute bit offers better performance than the 2 flute bit.

Per the Amana tool site,
Single flute allows for faster feed rates, greater chip clearance and
maximum stock removal.

http://www.amanatool.com/bits-fv/45100.html

A single flute cutter can be stiffer if the grinding design permits.
Resistance to deflection is a good property. Most 2 flute cutters exist
because of dynamics. A single flute OGee, e.g. will blow itself up at
25,000RPM.
Single flute bits have balance problems and are rarely found on cutters
with diameters much than the shank.
http://www.patwarner.com (Routers)

dadiOH's dandies v3.06...
....a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico


Hey dadiOH, your site is down.

Robert

wrote:
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico


Hey dadiOH, your site is down.

Robert

Nope.

--
dadiOH
____________________________

dadiOH's dandies v3.06...
....a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico

joe2 (in ) said:

| What is the performance and or application difference between router
| straight bits with a single flute and a double flute? Why two diff
| bits that do the same thing?

A single flute on a straight bit allows retention of more "meat" on
the shank - resulting in a stronger bit with less deflection.

A single-flute bit requires a slower feed and/or higher spindle speed.

More flutes permit higher feed rates and/or lower spindle speed. When
I have a choice I opt for three flutes, with two flutes as my second
choice. I've found that more flutes produces a smoother cut, perhaps
because with the spiral cutters I use, one of the flutes is always
bearing against the side of the cut.

When cutting with a V-bit, three flutes allows "parking" the bit
briefly without enlarging the cut at the parking spot.

The bits may be intended to produce the same-shaped cut but their
behavior is different. Choose the bit that provides the behavior
characteristic(s) you deem most important for the job you're doing.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/solar.html

Thanks to everyone for your input. Surprising how many folks selling router bits weren’t able to answer that question.