Does SKS know if there are alternative collets for the Tom Senior mill
that will take Weldon, or plain, shank endmills?
The local High School here in Burns Lake, British Columbia is finding it
difficult - and expensive - to access the threaded collets which seem to
be standard and the threaded endmills to suit.

Thanks for any help or suggestions of alternatives.

Mike in BC

On Fri, 30 Jan 2009 00:56:40 GMT, Michael Gray
wrote:

Does SKS know if there are alternative collets for the Tom Senior mill
that will take Weldon, or plain, shank endmills?
The local High School here in Burns Lake, British Columbia is finding it
difficult - and expensive - to access the threaded collets which seem to
be standard and the threaded endmills to suit.

Thanks for any help or suggestions of alternatives.

Mike in BC
-----------------
From a quick web search it appears that Tom Seniors generally had
a B&S9 taper, but may have had other options if special ordered
or converted. These seem to have a 1/2X13 drawbar thread.

If this is the case for your machine see
http://www.practicalmachinist.com/vb.../t-134575.html
http://cgi.ebay.ca/NEW-11-PC-BROWN-S...742.m153.l1262
http://cgi.ebay.it/NEW-8-PC-BROWN-SH...mZ150299157311
http://cgi.ebay.com/ws/eBayISAPI.dll...m=150299157311
(note you don't need the whole set 3/8 & 1/2 will cover most end
mills)
looks like best buy
http://cgi.ebay.com/12-Brown+Sharpe-...28179010r11869


I have used both the collets and end mill holders in a MT
spindle. The both work well, but the collets are harder to
change the tool as these are not "self-releasing." On the other
hand the adapter takes up 2 inches or so of head room which can
be a problem [and is why I have the collets], but are much
quicker to change an end mill or tool with the same size shank.

also
http://cgi.ebay.com/ws/eBayISAPI.dll...=200301524709/

Good luck and Let the group know how you and the school make out.


Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

On 2009-01-30, Michael Gray wrote:
Does SKS know if there are alternative collets for the Tom Senior mill
that will take Weldon, or plain, shank endmills?
The local High School here in Burns Lake, British Columbia is finding it
difficult - and expensive - to access the threaded collets which seem to
be standard and the threaded endmills to suit.

Those are the Clarkson endmills and holders. They are not
"standard" in the USA, And I think that you can get them more easily in
Canada than I could here.

The place where you could expect to find them most easily would
be in the UK, where they originated.

But -- especially in a school -- the Clarkson collets and
endmills will reduce the number of crashes, as that design absolutely
prevents the end mill from walking out of the collet.

I don't know what spindle the Tom Senior has, but it almost
certainly has an adaptor to the Clarkson collets and end mills, and you
should be able to get other styles to fit it. The most common and
likely would be the R8 spindle, but there are lots of others as
possibilities.

I happen to have some Clarkson to NTMB-30 spindle adaptors, and
the collets -- but not the end mills yet, so I have not yet had a chance
to play with them.

Good Luck,
DoN.

--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

Someone posted this link here in RCM, I think, when the Clarkson subject
came up recently:

http://www.denfordata.com/bb/viewtop...1bd3b 1810519

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


"DoN. Nichols" wrote in message
...

Those are the Clarkson endmills and holders. They are not
"standard" in the USA, And I think that you can get them more easily in
Canada than I could here.

The place where you could expect to find them most easily would
be in the UK, where they originated.

But -- especially in a school -- the Clarkson collets and
endmills will reduce the number of crashes, as that design absolutely
prevents the end mill from walking out of the collet.

I don't know what spindle the Tom Senior has, but it almost
certainly has an adaptor to the Clarkson collets and end mills, and you
should be able to get other styles to fit it. The most common and
likely would be the R8 spindle, but there are lots of others as
possibilities.

I happen to have some Clarkson to NTMB-30 spindle adaptors, and
the collets -- but not the end mills yet, so I have not yet had a chance
to play with them.

Good Luck,
DoN.

--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

Michael Gray wrote:
Does SKS know if there are alternative collets for the Tom Senior mill
that will take Weldon, or plain, shank endmills?
The local High School here in Burns Lake, British Columbia is finding it
difficult - and expensive - to access the threaded collets which seem to
be standard and the threaded endmills to suit.

Thanks for any help or suggestions of alternatives.

Mike in BC

What taper is the TS fitted with?. My neighbour has a TS which had a MT3
IIRC in the vertical head quill but we converted that to R8 for cheaper
and wider range of tooling and he could borrow the tooling for my BP.

If it's MT2 or MT3 then commonly available adaptors should do the trick
like here
http://www.arceurotrade.co.uk/Catalo...d-Mill-Holders
.. That's a UK site but likely to be available in the UK and Canada as well.

On Fri, 30 Jan 2009 20:24:34 +0000, David Billington wrote:

Michael Gray wrote:
Does SKS know if there are alternative collets for the Tom Senior mill
that will take Weldon, or plain, shank endmills? The local High School
here in Burns Lake, British Columbia is finding it difficult - and
expensive - to access the threaded collets which seem to be standard
and the threaded endmills to suit.

Thanks for any help or suggestions of alternatives.

Mike in BC

What taper is the TS fitted with?. My neighbour has a TS which had a MT3
IIRC in the vertical head quill but we converted that to R8 for cheaper
and wider range of tooling and he could borrow the tooling for my BP.

If it's MT2 or MT3 then commonly available adaptors should do the trick
like here
http://www.arceurotrade.co.uk/Catalo...lling-Cutters/
End-Mill-Holders
. That's a UK site but likely to be available in the UK and Canada as
well.

Well, finally managed to get the Clarkson chuck off the spindle and it
turns out it is MT2. No problems ahead now!

Mike in BC

SNIP

Well, finally managed to get the Clarkson chuck off the spindle and it
turns out it is MT2. No problems ahead now!

Mike in BC


Hey Mike,

My Busy Bee flyer catalogue arrived this morning, and they have MT-3
drawbar collets on special (that's MT THREE). Now I know that they
have sold MT2 collets individual and in sets in the past, but I
couldn't find it in a quick check at www.busybeetools.com, nor ANY MT
collets at www.KBCtools.com, both of which are on the lower mainland
there in BC.

However,
http://www.cdcotools.com/
does stock them, even though they are spelled MOSE collets!! Pretty
decent guys to deal with and low prices

Item 35129 MT2 collet 1/8 - 1/2" (by 1/16's) = 7 PC Set at .
$53.00 US

They do ship to Canada, although an email is best due to a less than
easy to understand verbal language conflict, or order on-line. Really
nice guy, but hard to understand. He will be at NAMES in mid- April
if that helps.

Take care.

Brian Lawson,
Bothwell, Ontario.

ps....I had a Clarkson Auto-Lock on an Atlas mill some years back, and
it was tough to get those "threaded-drive-end" end-mills even then. I
went to the MT2 collets.

On Thu, 12 Mar 2009 14:26:03 GMT, Michael Gray
wrote:

On Fri, 30 Jan 2009 20:24:34 +0000, David Billington wrote:

Michael Gray wrote:
Does SKS know if there are alternative collets for the Tom Senior mill
that will take Weldon, or plain, shank endmills? The local High School
here in Burns Lake, British Columbia is finding it difficult - and
expensive - to access the threaded collets which seem to be standard
and the threaded endmills to suit.

Thanks for any help or suggestions of alternatives.

Mike in BC

What taper is the TS fitted with?. My neighbour has a TS which had a MT3
IIRC in the vertical head quill but we converted that to R8 for cheaper
and wider range of tooling and he could borrow the tooling for my BP.

If it's MT2 or MT3 then commonly available adaptors should do the trick
like here
http://www.arceurotrade.co.uk/Catalo...lling-Cutters/
End-Mill-Holders
. That's a UK site but likely to be available in the UK and Canada as
well.

Well, finally managed to get the Clarkson chuck off the spindle and it
turns out it is MT2. No problems ahead now!

Mike in BC
--------
Thanks for the feedback. I always wonder how things turn out.


Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

On Thu, 12 Mar 2009 12:01:33 -0400, Brian Lawson wrote:

SNIP

Well, finally managed to get the Clarkson chuck off the spindle and it
turns out it is MT2. No problems ahead now!

Mike in BC


Hey Mike,

My Busy Bee flyer catalogue arrived this morning, and they have MT-3
drawbar collets on special (that's MT THREE). Now I know that they have
sold MT2 collets individual and in sets in the past, but I couldn't find
it in a quick check at www.busybeetools.com, nor ANY MT collets at
www.KBCtools.com, both of which are on the lower mainland there in BC.

However,
http://www.cdcotools.com/
does stock them, even though they are spelled MOSE collets!! Pretty
decent guys to deal with and low prices

Item 35129 MT2 collet 1/8 - 1/2" (by 1/16's) = 7 PC Set at .
$53.00 US

They do ship to Canada, although an email is best due to a less than
easy to understand verbal language conflict, or order on-line. Really
nice guy, but hard to understand. He will be at NAMES in mid- April if
that helps.

Take care.

Brian Lawson,
Bothwell, Ontario.

ps....I had a Clarkson Auto-Lock on an Atlas mill some years back, and
it was tough to get those "threaded-drive-end" end-mills even then. I
went to the MT2 collets.


Thanks Brian, got my BB flyer this am too. Miracles do happen!

They've got some MT2 endmill holders (drawbar) for Weldon shank mills, so
do ArcEuroTrade (John Stevenson?) in the UK. John's look like somewhat
better quality and the price is good too. It's the shipping that's off-
putting. Anyway have given the 2 shop teachers a heads-up on all this so
now it's up to them.

Mike in BC