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

wrote in message
ps.com...
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.

"Edwin Pawlowski" 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?

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.

No as well...

Edwin Pawlowski wrote:
wrote in message
ps.com...

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

"Upscale" wrote in message
...
"Edwin Pawlowski" 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.

Thanks All.
Will wrote:
No as well...

Edwin Pawlowski wrote:
wrote in message
ps.com...

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

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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No.

wrote in message
ps.com...
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

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

"Upscale" wrote in message
...
"Edwin Pawlowski" 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?

On Mon, 21 Feb 2005 13:17:04 -0500, "Upscale"
wrote:

"Edwin Pawlowski" 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.

"Upscale" wrote in message
...
"Edwin Pawlowski" 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

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

"Leon" wrote in message
om...

"Upscale" wrote in message
...
"Edwin Pawlowski" 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

"CW" wrote in message
...
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

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" wrote in message
. com...

"CW" wrote in message
...
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