t

21/02/2005 9:51 AM

Newbie router question

I was going to buy a 5/16 (cutter diameter) spiral upcut bit to cut
some slots in plywood. I see some with 5/16 shanks for ~$15, and some
with 1/2 shanks in $30-40 range. Could the 5/16 shank be used in a 1/4
collet? Thanks.

Troy


This topic has 14 replies

t

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 11:29 AM

Thanks All.
Will wrote:
> No as well...
>
> Edwin Pawlowski wrote:
> > <[email protected]> wrote in message
> > news:[email protected]...
> >
> >> Could I use the 5/16 shank be used in a 1/4 collet? Thanks.
> >>Troy
> >
> > Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the
sixteenths.
> > The size of the hole is only 4 of the sixteenths so unless you have
a really
> > big hammer, it won't fit. You need a collet with one more
sixteenths in it.
>
> > And no, I won't even joke about the 1/2" collet and duct tape.
>
> Clearly not a "Red Green" Fan. Hmmpphh !!!
>
> >
>
> --
> Will
> Occasional Techno-geek

mm

"mp"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 10:37 AM

>> Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.
>
> Never heard of 5/16" bit or collets for that matter. 1/4" and 3/8" yes,
> but
> not in between. Do they actually exist or have I been living too sheltered
> a
> life?

They're probably metalworking cutters, which come in all shapes and sizes.

Lr

"Leon"

in reply to [email protected] on 21/02/2005 9:51 AM

22/02/2005 5:50 AM


"CW" <[email protected]> wrote in message
news:[email protected]...
> Actually, there is .00246" difference. 5/16" is .3125. This is enough
> difference I wouldn't interchange them.


I stand corrected. But the Leigh site sells

Item 140-8, 170, and 170-C The shank diameter is listed as 8mm & 5/16".

Take a look.
http://www.leighjigs.com/cutters-f1.php



Td

"TeamCasa"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 11:30 AM

> Could the 5/16 shank be used in a 1/4
> collet? Thanks.
>
> Troy
>

No. (Unless they spend a little time in the lathe first.)

However, a collet can be had to allow it to work in a 1/2 router.

Dave



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Lr

"Leon"

in reply to [email protected] on 21/02/2005 9:51 AM

22/02/2005 4:33 AM


"Upscale" <[email protected]> wrote in message
news:[email protected]...
> "Edwin Pawlowski" <[email protected]> wrote in message news:FtpSd.34631
>>
>> Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.
>
> Never heard of 5/16" bit or collets for that matter. 1/4" and 3/8" yes,
> but
> not in between. Do they actually exist or have I been living too sheltered
> a
> life?
>

Yes 5/16" exists and is a very common size.
Leigh sell this bit for their jigs.
Also, for those that use metric sized shanks, 8mm is extremely common. 8mm
is within 1.5/10,000th of an inch of being 5/16".
8mm = 0.3149606299 inches. 5/16" = .315

EP

"Edwin Pawlowski"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 7:18 PM


"Upscale" <[email protected]> wrote in message
news:[email protected]...
> "Edwin Pawlowski" <[email protected]> wrote in message news:FtpSd.34631
>>
>> Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.
>
> Never heard of 5/16" bit or collets for that matter. 1/4" and 3/8" yes,
> but
> not in between. Do they actually exist or have I been living too sheltered
> a
> life?


I think some of the spiral bits were intended for other uses, such as
milling machines. In the proper chuck or collet, they would be OK. Perhaps
some of the industrial tools have other collets too.

b

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 5:22 PM

On Mon, 21 Feb 2005 13:17:04 -0500, "Upscale" <[email protected]>
wrote:

>"Edwin Pawlowski" <[email protected]> wrote in message news:FtpSd.34631
>>
>> Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.
>
>Never heard of 5/16" bit or collets for that matter. 1/4" and 3/8" yes, but
>not in between. Do they actually exist or have I been living too sheltered a
>life?
>


absolutely they do exist, both the collets and the cutters. however,
they aren't generally found on woodworking tools. my mill has
available dozens of sizes of collets, and the cutters to match.

EP

"Edwin Pawlowski"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 6:09 PM


<[email protected]> wrote in message
news:[email protected]...
>I was going to buy a 5/16 (cutter diameter) spiral upcut bit to cut
> some slots in plywood. I see some with 5/16 shanks for ~$15, and some
> with 1/2 shanks in $30-40 range. Could the 5/16 shank be used in a 1/4
> collet? Thanks.
>
> Troy

Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.
The size of the hole is only 4 of the sixteenths so unless you have a really
big hammer, it won't fit. You need a collet with one more sixteenths in it.
And no, I won't even joke about the 1/2" collet and duct tape.

Cc

"CW"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 3:48 PM

No.

<[email protected]> wrote in message
news:[email protected]...
> I was going to buy a 5/16 (cutter diameter) spiral upcut bit to cut
> some slots in plywood. I see some with 5/16 shanks for ~$15, and some
> with 1/2 shanks in $30-40 range. Could the 5/16 shank be used in a 1/4
> collet? Thanks.
>
> Troy
>

Cc

"CW"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 9:31 PM

Actually, there is .00246" difference. 5/16" is .3125. This is enough
difference I wouldn't interchange them.

"Leon" <[email protected]> wrote in message
news:[email protected]...
>
> "Upscale" <[email protected]> wrote in message
> news:[email protected]...
> > "Edwin Pawlowski" <[email protected]> wrote in message news:FtpSd.34631
> >>
> >> Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the
sixteenths.
> >
> > Never heard of 5/16" bit or collets for that matter. 1/4" and 3/8" yes,
> > but
> > not in between. Do they actually exist or have I been living too
sheltered
> > a
> > life?
> >
>
> Yes 5/16" exists and is a very common size.
> Leigh sell this bit for their jigs.
> Also, for those that use metric sized shanks, 8mm is extremely common.
8mm
> is within 1.5/10,000th of an inch of being 5/16".
> 8mm = 0.3149606299 inches. 5/16" = .315
>
>

Cc

"CW"

in reply to [email protected] on 21/02/2005 9:51 AM

26/02/2005 6:38 PM

Due to the design of most router collets, this is far to much variation to
call interchangeable. Using collets everyday of all sizes and designs, I
would stear clear of using something with that kind of mismatch in most
collet designs. You may well get away with it but I wouldn't chance it.

"Leon" <[email protected]> wrote in message
news:[email protected]...
>
> "CW" <[email protected]> wrote in message
> news:[email protected]...
> > Actually, there is .00246" difference. 5/16" is .3125. This is enough
> > difference I wouldn't interchange them.
>
>
> I stand corrected. But the Leigh site sells
>
> Item 140-8, 170, and 170-C The shank diameter is listed as 8mm & 5/16".
>
> Take a look.
> http://www.leighjigs.com/cutters-f1.php
>
>
>
>

Wn

Will

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 1:41 PM

No as well...

Edwin Pawlowski wrote:
> <[email protected]> wrote in message
> news:[email protected]...
>
>> Could I use the 5/16 shank be used in a 1/4 collet? Thanks.
>>Troy
>
> Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.
> The size of the hole is only 4 of the sixteenths so unless you have a really
> big hammer, it won't fit. You need a collet with one more sixteenths in it.

> And no, I won't even joke about the 1/2" collet and duct tape.

Clearly not a "Red Green" Fan. Hmmpphh !!!

>

--
Will
Occasional Techno-geek

Cc

"CW"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 3:50 PM

They exist but they are not manufactured as router bits. The are made for
milling aluminum.

"Upscale" <[email protected]> wrote in message
news:[email protected]...
> "Edwin Pawlowski" <[email protected]> wrote in message news:FtpSd.34631
> >
> > Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.
>
> Never heard of 5/16" bit or collets for that matter. 1/4" and 3/8" yes,
but
> not in between. Do they actually exist or have I been living too sheltered
a
> life?
>
>

Uu

"Upscale"

in reply to [email protected] on 21/02/2005 9:51 AM

21/02/2005 1:17 PM

"Edwin Pawlowski" <[email protected]> wrote in message news:FtpSd.34631
>
> Let's see. 5/16 = 5 of the sixteenths. 1/4 = only 4 of the sixteenths.

Never heard of 5/16" bit or collets for that matter. 1/4" and 3/8" yes, but
not in between. Do they actually exist or have I been living too sheltered a
life?


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