JR

Jerome Ranch

18/03/2006 7:03 PM

Countersink Bits

Input on the best bits for countersinking will be appreciated.
The ones I have are tearing up the surface grain real bad (and they're
brand new)
Jerry


This topic has 8 replies

Tt

"Tyke"

in reply to Jerome Ranch on 18/03/2006 7:03 PM

18/03/2006 2:26 PM

I have been very happy with a countersink bit I purchased from Lee Valley
Tool.

http://www.leevalley.com/hardware/page.aspx?c=2&p=32308&cat=3,41306,41328

I like the continuous style. It has given me less tearout.

Dave Paine.

"Jerome Ranch" <[email protected]> wrote in message
news:[email protected]...
> Input on the best bits for countersinking will be appreciated.
> The ones I have are tearing up the surface grain real bad (and they're
> brand new)
> Jerry

ER

Enoch Root

in reply to Jerome Ranch on 18/03/2006 7:03 PM

19/03/2006 10:34 PM

Jerome Ranch wrote:
> Input on the best bits for countersinking will be appreciated.
> The ones I have are tearing up the surface grain real bad (and they're
> brand new)

You might try checking the edge on the ones you have, and sharpening if
necessary.

er
--
email not valid

MB

Michael Burton

in reply to Jerome Ranch on 18/03/2006 7:03 PM

19/03/2006 5:29 PM

Tyke wrote in news:[email protected]:

> I have been very happy with a countersink bit I purchased from Lee
> Valley Tool.
>
> http://www.leevalley.com/hardware/page.aspx?c=2&p=32308&cat=3,41306,413
> 28
>
> I like the continuous style. It has given me less tearout.
>
> Dave Paine.
>
> "Jerome Ranch" <[email protected]> wrote in message
> news:[email protected]...
>> Input on the best bits for countersinking will be appreciated.
>> The ones I have are tearing up the surface grain real bad (and
>> they're brand new)
>> Jerry
>
>

The single flute countersinks are excellent. The ones I own are made by the
Weldon Tool Company, I think bought mine at The Cutting Edge in Houston I
think. They work great in Aluminum as well.

--
Michael Burton
Thunderbird Hardwoods
Llano, TX

mhburton at tbird-hardwoods dot com

Br

Ba r r y

in reply to Jerome Ranch on 18/03/2006 7:03 PM

19/03/2006 12:37 PM

On Sat, 18 Mar 2006 19:30:54 GMT, Jerome Ranch <[email protected]>
wrote:

>Dave
>How would you control depth of cut with that style?

Masking tape on the bit and care is excellent for depth control while
hand drilling (with or without electricity).

I actually own "real" depth stops and use tape more often than the
stops.

Barry

Rd

Robatoy

in reply to Jerome Ranch on 18/03/2006 7:03 PM

18/03/2006 2:05 PM

In article <[email protected]>,
Jerome Ranch <[email protected]> wrote:

> Input on the best bits for countersinking will be appreciated.
> The ones I have are tearing up the surface grain real bad (and they're
> brand new)
> Jerry

I bought a set of spiral, tapered bits with countersinks from Lee Valley
some 20 years ago. Flawless, never sharpened still in use today. (I did
break the tip off the #12 but it still works...sorta/kinda.)

The usual disclaimer applies: I'm Kanuckistani, like Robin Lee, other
than that we never had lunch.

Tt

"Tyke"

in reply to Jerome Ranch on 18/03/2006 7:03 PM

18/03/2006 4:53 PM

Yes this is what I have been doing so far. My present uses have not
required precision. If I need to truly control then I would use a drill
press.

I normally use the countersink bit in a brace and bit. I drill a little,
test the hole against the screw head until I get the whole head to fit in
the hole.

Dave Paine

"Juergen Hannappel" <[email protected]> wrote in message
news:[email protected]...
> Jerome Ranch <[email protected]> writes:
>
>> Dave
>> How would you control depth of cut with that style?
>
> With care or preferably the drill presses depth stop.
>
> --
> Dr. Juergen Hannappel http://lisa2.physik.uni-bonn.de/~hannappe
> mailto:[email protected] Phone: +49 228 73 2447 FAX ... 7869
> Physikalisches Institut der Uni Bonn Nussallee 12, D-53115 Bonn, Germany
> CERN: Phone: +412276 76461 Fax: ..77930 Bat. 892-R-A13 CH-1211 Geneve 23

JR

Jerome Ranch

in reply to Jerome Ranch on 18/03/2006 7:03 PM

18/03/2006 7:30 PM

Dave
How would you control depth of cut with that style?


>
>http://www.leevalley.com/hardware/page.aspx?c=2&p=32308&cat=3,41306,41328
>

JH

Juergen Hannappel

in reply to Jerome Ranch on 18/03/2006 7:03 PM

18/03/2006 8:50 PM

Jerome Ranch <[email protected]> writes:

> Dave
> How would you control depth of cut with that style?

With care or preferably the drill presses depth stop.

--
Dr. Juergen Hannappel http://lisa2.physik.uni-bonn.de/~hannappe
mailto:[email protected] Phone: +49 228 73 2447 FAX ... 7869
Physikalisches Institut der Uni Bonn Nussallee 12, D-53115 Bonn, Germany
CERN: Phone: +412276 76461 Fax: ..77930 Bat. 892-R-A13 CH-1211 Geneve 23


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