Heads-up for Clarkson screwed-shank users

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Heads-up for Clarkson screwed-shank users

This topic has 9 replies, 5 voices, and was last updated 13 October 2022 at 12:19 by Tony Pratt 1.

Viewing 10 posts - 1 through 10 (of 10 total)

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10 October 2022 at 20:19 #616831
Michael Gilligan
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@michaelgilligan61133
I have just received a couple of Clarkson cutter Blanks purchased from Tony English on ebay: **LINK**

https://www.ebay.co.uk/itm/313492499195

These look exceptionally useful as a shank for custom tools

[ I have the special 3/8” collet for my BCA ]

Never seen them before !

MichaelG.
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10 October 2022 at 20:19 #20815
Michael Gilligan
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@michaelgilligan61133
10 October 2022 at 21:11 #616833
old mart
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@oldmart
I haven't seen them before, are they full hard? I do have a 16mm screwed shank that I made to hold slitting saws, as the arbor for them is MT2 and having captive drawbars in both the museum's mills renders it unusable. It is made from 16mm ground stock, not hard, though.
10 October 2022 at 21:25 #616834
Michael Gilligan
Participant
@michaelgilligan61133
I haven’t checked them for hardness yet … but my current assumption is that they are as hard as any Clarkson HSS cutter, throughout.

The attraction, of course, is that they are [very clearly] made to the exquisite standard of a Clarkson cutter, with beautifully ground threads … Oh yes, they are also capped, at the reduced diameter end, with that dipped coating [sorry, can’t remember the name] that you see on new cutters.

… To me, it just shouts “I will save you a lot of effort and do a better job than you could ever do”

… and for that; they are silly-cheap !

MichaelG.

.

P.S. __ as can be seen on the ebay listing, there is a very slight [fingernail detectable] increase in diameter at the business-end.

Edited By Michael Gilligan on 10/10/2022 21:37:01
10 October 2022 at 23:53 #616844
Pete.
Participant
@pete-2
What would you typically turn these in to? My imagination is stuck in neutral, I'm sure as soon as you give some examples it'll seem obvious but it isn't right now.
11 October 2022 at 00:10 #616845
Michael Gilligan
Participant
@michaelgilligan61133
Well, Pete … if I hadn’t already made one using an old blunt end-mill as a shank, the first thing would be a fly-cutter.

Currently pondering things like edge finders and centre finders … making use of the fact that this blank has a female centre at the end, in which a ball could sit.

MichaelG.
11 October 2022 at 00:17 #616846
Emgee
Participant
@emgee
Tony English is a very reliable and well established eBay trader, lots of good gear at fairly low prices, fast postage and good packing.

Emgee
11 October 2022 at 19:24 #616959
old mart
Participant
@oldmart
Michael, if you are into grinding screwed shank cutters, maybe I could do a deal with you. The museum has a box of blunt cutters, mostly inch sizes which might as well be throw away. If you could sharpen them and the finished diameter does not matter, I would be pleased to get 15% back sharp in return.

By the way, I have bought several things from the Tony English ebay site and have never been dissapointed.

Edited By old mart on 11/10/2022 19:27:08
11 October 2022 at 20:19 #616967
Michael Gilligan
Participant
@michaelgilligan61133
Posted by old mart on 11/10/2022 19:24:53:

Michael, if you are into grinding screwed shank cutters, maybe I could do a deal with you. […]

.

If I was, you probably could … but unfortunately I am not.

MichaelG.
13 October 2022 at 12:19 #617135
Tony Pratt 1
Participant
@tonypratt1
This post reminded me of long forgotten Clarkson collet adaptors I made back in the 70's when threaded cutters were king. Basically just old cutter shanks cut off & slotted to take a screw driver, we would screw them into the correct collet and now plain shanked tooling could be held securely.

Tony
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