I am trying to machine some aluminum and it involves countersinking some
holes. I have tried a variety of 3/4" countersinks and so far they all suck
rocks. I tried the Vermont American single flute and it didn't want to cut.
I next tried a Bosch and it chattered so badly even in wood as to be
unusable. I have a Stanley 1/2" that works great but cannot find anyone that
carries Stanley countersinks. Any suggestions for a multi flute countersink?
R. Pierce Butler skrev:
> "Hambone Slim" <[email protected]> wrote in
> news:[email protected]:
>
>> "R. Pierce Butler" wrote...
>>> I am trying to machine some aluminum and it involves countersinking some
>>> holes. I have tried a variety of 3/4" countersinks and so far they all
>> suck
>>> rocks.
>>
>> I've had good luck with this style countersink in wood, aluminum, and
>> plastic:
>>
>> <http://www.woodcraft.com/family.aspx?familyid=5154>
>>
>> --
>> Timothy Juvenal
>> www.tjwoodworking.com
>>
>>
>>
>
>
> Too small. I need a 3/4" countersink.
http://www.leevalley.com/hardware/page.aspx?c=3&p=41012&cat=3,41306,41328
Pilot essential, speed slow, work held fast, most any HSS design will
yield acceptable results, Ford better than others if chamfer precut
with piloted cutter.
Sample in the http://patwarner.com/new_pix.html link done this way in 2
stages.
http://www.patwarner.com (Routing & drilling)
_____________________________________________
R. Pierce Butler wrote:
> I am trying to machine some aluminum and it involves countersinking some
> holes. I have tried a variety of 3/4" countersinks and so far they all suck
> rocks. I tried the Vermont American single flute and it didn't want to cut.
> I next tried a Bosch and it chattered so badly even in wood as to be
> unusable. I have a Stanley 1/2" that works great but cannot find anyone that
> carries Stanley countersinks. Any suggestions for a multi flute countersink?
"R. Pierce Butler" wrote...
> I am trying to machine some aluminum and it involves countersinking some
> holes. I have tried a variety of 3/4" countersinks and so far they all
suck
> rocks.
I've had good luck with this style countersink in wood, aluminum, and
plastic:
<http://www.woodcraft.com/family.aspx?familyid=5154>
--
Timothy Juvenal
www.tjwoodworking.com
Upscale wrote:
> "R. Pierce Butler" <[email protected]> wrote in message
>> I am trying to machine some aluminum and it involves countersinking some
>> holes. I have tried a variety of 3/4" countersinks and so far they all
> suck
>> rocks. I tried the Vermont American single flute and it didn't want to
> cut.
>> I next tried a Bosch and it chattered so badly even in wood as to be
>> unusable. I have a Stanley 1/2" that works great but cannot find anyone
> that
>> carries Stanley countersinks. Any suggestions for a multi flute
> countersink?
>
> http://www.leevalley.com/hardware/page.aspx?c=3&p=41012&cat=3,41306,41328
>
> No longer available on LV, but you maybe able to find another source.
> http://www.leevalley.com/wood/page.aspx?c=3&p=32270&cat=1,180,42240
>
>
Upscale has the pricier ones, and I have the cheaper model:
http://www.leevalley.com/hardware/page.aspx?c=3&p=32308&cat=3,41306,41328
That's the best c'sink I've ever used, and I'm sure it would cut nice
countersinks in aluminum too.
Tanus
--
This is not really a sig.
R. Pierce Butler wrote:
> Tanus <[email protected]> wrote in news:[email protected]:
>
>> Upscale wrote:
>>> "R. Pierce Butler" <[email protected]> wrote in message
>>>> I am trying to machine some aluminum and it involves countersinking
>>>> some holes. I have tried a variety of 3/4" countersinks and so far
>>>> they all
>>> suck
>>>> rocks. I tried the Vermont American single flute and it didn't want
>>>> to
>>> cut.
>>>> I next tried a Bosch and it chattered so badly even in wood as to be
>>>> unusable. I have a Stanley 1/2" that works great but cannot find
>>>> anyone
>>> that
>>>> carries Stanley countersinks. Any suggestions for a multi flute
>>> countersink?
>>>
>>> http://www.leevalley.com/hardware/page.aspx?c=3&p=41012&cat=3,41306,4132
>>> 8
>>>
>>> No longer available on LV, but you maybe able to find another source.
>>> http://www.leevalley.com/wood/page.aspx?c=3&p=32270&cat=1,180,42240
>>>
>>>
>> Upscale has the pricier ones, and I have the cheaper model:
>>
>> http://www.leevalley.com/hardware/page.aspx?c=3&p=32308&cat=3,41306,41328
>>
>> That's the best c'sink I've ever used, and I'm sure it would cut nice
>> countersinks in aluminum too.
>>
>> Tanus
>>
>
> not big enough.
>
That's what an ex girlfriend once said.
Tanus
--
This is not really a sig.
"R. Pierce Butler" <[email protected]> wrote in message
> I am trying to machine some aluminum and it involves countersinking some
> holes. I have tried a variety of 3/4" countersinks and so far they all
suck
> rocks. I tried the Vermont American single flute and it didn't want to
cut.
> I next tried a Bosch and it chattered so badly even in wood as to be
> unusable. I have a Stanley 1/2" that works great but cannot find anyone
that
> carries Stanley countersinks. Any suggestions for a multi flute
countersink?
http://www.leevalley.com/hardware/page.aspx?c=3&p=41012&cat=3,41306,41328
No longer available on LV, but you maybe able to find another source.
http://www.leevalley.com/wood/page.aspx?c=3&p=32270&cat=1,180,42240
R. Pierce Butler wrote:
> I am trying to machine some aluminum and it involves countersinking some
> holes. I have tried a variety of 3/4" countersinks and so far they all suck
> rocks. I tried the Vermont American single flute and it didn't want to cut.
> I next tried a Bosch and it chattered so badly even in wood as to be
> unusable. I have a Stanley 1/2" that works great but cannot find anyone that
> carries Stanley countersinks. Any suggestions for a multi flute countersink?
G'day,
I gather the holes are already drilled ??. If not, drill the countersink
first with a drill bit the right size for the screw heads, than drill
the hole through the centre for the screw shank. The smaller bit will
self centre in the larger, countersink holes.
Regards
John
"Joe AutoDrill" <[email protected]> wrote in
news:ZKnzg.1110$eG.309@trndny08:
> <[email protected]> wrote in message
> news:[email protected]...
>> Pilot essential, speed slow, work held fast, most any HSS design will
>> yield acceptable results, Ford better than others if chamfer precut
>> with piloted cutter.
>> Sample in the http://patwarner.com/new_pix.html link done this way in 2
>> stages.
>
> Agreed. Use oil or something similar as a lubricant in aluminum ALWAYS.
> Aluminum becomes gummy on just about any tool at just about any speed
> sooner or later.
>
> Run the RPMs as slow as possible... "Play with" your downward pressure
> to minimize chatter as needed. Pilot hole is absolutely necessary.
>
> Ask in rec.crafts.metalworking for a more professional-soundign answer.
> :)
>
> Regards,
> Joe Agro, Jr.
> (800) 871-5022
> 01.908.542.0244
> Automatic / Pneumatic Drills: http://www.AutoDrill.com
> Multiple Spindle Drills: http://www.Multi-Drill.com
>
> V8013-R
>
>
>
>
I have used my Stanley 1/2" countersink in wood and brass with no issues.
Even starting to countersink a hole in soft pine using the Bosch CS
resulted in horrible amounts of chatter.
"Joe AutoDrill" <[email protected]> wrote in
news:f0ozg.7909$Ju.7125@trndny09:
>> I have used my Stanley 1/2" countersink in wood and brass with no
>> issues. Even starting to countersink a hole in soft pine using the
>> Bosch CS resulted in horrible amounts of chatter.
>
> What RPM are you running when this happens? Is the tool new or at least
> sharp?
>
> I don't have the RPMs for countersinks memorized, but I'd guess that if
> I had to simply walk up to a drill press (you are using a drill press
> and not a hand drill, right?) and make a counersunk hole, I'd run it at
> 1/2 the speed of drilling to start.
>
> Rough, ver conservative drilling RPMs can be found on my site at:
> http://www.multi-drill.com/drill-speed-chart.htm
>
> Regards,
> Joe Agro, Jr.
> (800) 871-5022
> 01.908.542.0244
> Automatic / Pneumatic Drills: http://www.AutoDrill.com
> Multiple Spindle Drills: http://www.Multi-Drill.com
>
> V8013-R
>
>
>
>
I chucked the Bosch bit in my drill press at the lowest speed and it
chattered very badly. I decided to try a variable speed hand drill and no
matter what speed i tried, it chattered. Wood, Brass, it doesn't matter.
I think I will have to order a set to get a good countersink that I can use
in my drillpress. I wish I could find a Stanley 3/4" countersink. BTW,
I clamped the pieces to the drill press using c clamps.
"Hambone Slim" <[email protected]> wrote in
news:[email protected]:
> "R. Pierce Butler" wrote...
>> I am trying to machine some aluminum and it involves countersinking some
>> holes. I have tried a variety of 3/4" countersinks and so far they all
> suck
>> rocks.
>
>
> I've had good luck with this style countersink in wood, aluminum, and
> plastic:
>
> <http://www.woodcraft.com/family.aspx?familyid=5154>
>
> --
> Timothy Juvenal
> www.tjwoodworking.com
>
>
>
Too small. I need a 3/4" countersink.
Name <[email protected]> wrote in news:[email protected]:
> R. Pierce Butler skrev:
>> "Hambone Slim" <[email protected]> wrote in
>> news:[email protected]:
>>
>>> "R. Pierce Butler" wrote...
>>>> I am trying to machine some aluminum and it involves countersinking
>>>> some holes. I have tried a variety of 3/4" countersinks and so far
>>>> they all
>>> suck
>>>> rocks.
>>>
>>> I've had good luck with this style countersink in wood, aluminum, and
>>> plastic:
>>>
>>> <http://www.woodcraft.com/family.aspx?familyid=5154>
>>>
>>> --
>>> Timothy Juvenal
>>> www.tjwoodworking.com
>>>
>>>
>>>
>>
>>
>> Too small. I need a 3/4" countersink.
>
>
> http://www.leevalley.com/hardware/page.aspx?c=3&p=41012&cat=3,41306,41328
>
that could work. I will have to get one the next time I order from Lee
Valley.
Tanus <[email protected]> wrote in news:[email protected]:
> Upscale wrote:
>> "R. Pierce Butler" <[email protected]> wrote in message
>>> I am trying to machine some aluminum and it involves countersinking
>>> some holes. I have tried a variety of 3/4" countersinks and so far
>>> they all
>> suck
>>> rocks. I tried the Vermont American single flute and it didn't want
>>> to
>> cut.
>>> I next tried a Bosch and it chattered so badly even in wood as to be
>>> unusable. I have a Stanley 1/2" that works great but cannot find
>>> anyone
>> that
>>> carries Stanley countersinks. Any suggestions for a multi flute
>> countersink?
>>
>> http://www.leevalley.com/hardware/page.aspx?c=3&p=41012&cat=3,41306,4132
>> 8
>>
>> No longer available on LV, but you maybe able to find another source.
>> http://www.leevalley.com/wood/page.aspx?c=3&p=32270&cat=1,180,42240
>>
>>
>
> Upscale has the pricier ones, and I have the cheaper model:
>
> http://www.leevalley.com/hardware/page.aspx?c=3&p=32308&cat=3,41306,41328
>
> That's the best c'sink I've ever used, and I'm sure it would cut nice
> countersinks in aluminum too.
>
> Tanus
>
not big enough.
"Edwin Pawlowski" <[email protected]> wrote in news:VKOzg.11217$Ju.7756@trndny09:
>
> "R. Pierce Butler" wrote...
>>> I am trying to machine some aluminum and it involves countersinking some
>>> holes. I have tried a variety of 3/4" countersinks and so far they all
>> suck
>
>
> Countersinks are for sissies. Real men use a plug cutter and recess the
> screws, welding the plug in place.
>
>
>
>
Hard to do that with 3/8" thick aluminum plus make the screw removable.
<[email protected]> wrote in message
news:[email protected]...
> Pilot essential, speed slow, work held fast, most any HSS design will
> yield acceptable results, Ford better than others if chamfer precut
> with piloted cutter.
> Sample in the http://patwarner.com/new_pix.html link done this way in 2
> stages.
Agreed. Use oil or something similar as a lubricant in aluminum ALWAYS.
Aluminum becomes gummy on just about any tool at just about any speed sooner
or later.
Run the RPMs as slow as possible... "Play with" your downward pressure to
minimize chatter as needed. Pilot hole is absolutely necessary.
Ask in rec.crafts.metalworking for a more professional-soundign answer. :)
Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com
V8013-R
> I have used my Stanley 1/2" countersink in wood and brass with no issues.
> Even starting to countersink a hole in soft pine using the Bosch CS
> resulted in horrible amounts of chatter.
What RPM are you running when this happens? Is the tool new or at least
sharp?
I don't have the RPMs for countersinks memorized, but I'd guess that if I
had to simply walk up to a drill press (you are using a drill press and not
a hand drill, right?) and make a counersunk hole, I'd run it at 1/2 the
speed of drilling to start.
Rough, ver conservative drilling RPMs can be found on my site at:
http://www.multi-drill.com/drill-speed-chart.htm
Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com
V8013-R
Get a bigger one.
"R. Pierce Butler" <[email protected]> wrote in message
news:[email protected]...
> >
>
> not big enough.
>
ORDER A GOOD SINBLE FLUTE FROM http://www.kbctools.com/
I HAVE SEVERAL THAT I USE ON ALL METALS, WOOD AND PLASTIC. I USE THEM ON
THE DRILL PRESS, HAND HELD, AND SOMETIMES IN AN OLD HAND CRANK, BREAST
DRILL.
WORKS JUST AS GOOD WET OR DRY.
DON'T GET THE CHEAP ONE YOU WILL HAVE THE SAME RESULTS YOU ARE HAVING NOW.
GOOD LUCK
WOODWORM
"R. Pierce Butler" <[email protected]> wrote in message
news:[email protected]...
> I am trying to machine some aluminum and it involves countersinking some
> holes. I have tried a variety of 3/4" countersinks and so far they all
suck
> rocks. I tried the Vermont American single flute and it didn't want to
cut.
> I next tried a Bosch and it chattered so badly even in wood as to be
> unusable. I have a Stanley 1/2" that works great but cannot find anyone
that
> carries Stanley countersinks. Any suggestions for a multi flute
countersink?
> I chucked the Bosch bit in my drill press at the lowest speed and it
> chattered very badly. I decided to try a variable speed hand drill and no
> matter what speed i tried, it chattered. Wood, Brass, it doesn't matter.
> I think I will have to order a set to get a good countersink that I can
> use
> in my drillpress. I wish I could find a Stanley 3/4" countersink. BTW,
> I clamped the pieces to the drill press using c clamps.
You are on the right track. Sounds like the Bosch bit may either be dull, a
specialty bit for something else, or simply doesn't like you.
Much success.
Also, final thought on RPM... Some folks countresink up to 3X the diameter
of the inside hole... In that case, you may want to drop the RPMs even
further... i.e. a 1/4" hole with a 1/2" ctrsink will have the ctrsink run
at 40-50% of the hole drilling rpm. But... a 1/4" hole with a 3/4" ctrsink
will run at 33% or less the speed of the drilling rpm, etc.
When in wood, it usually doesn't matter as much unless you want a clean hole
and/or no burnt wood. I haven't met a wood worker yet who uses coolant
other than air...
Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com
V8013-R