Dickson / Bison toolpost dimensions


eddie.draper@btinternet.com
 

Thanks. I'll give that a go. Will report back if any sense emerges.


Eddie




------ Original Message ------
From: "mike allen" <animal@...>
To: SouthBendLathe@groups.io
Sent: Saturday, 24 Dec, 22 At 18:20
Subject: Re: [SouthBendLathe] Dickson / Bison toolpost dimensions

Homemade ? You might ask over on the Practical Machinist forum https://www.practicalmachinist.com/forum/


animal


On 12/24/2022 2:18 AM, eddie.draper@... via groups.io wrote:

Dear all,


Does anybody have a Dickson / Bison S3 or T3 size toolpost on which they could please measure the distance between centres of the mounting Vees? I have a toolholder that is a none standard length, somewhere between sizes 2 & 3, and none of my web searches have turned up this vital piece of i/d information. I'm hoping it is a size 3, but I have no access to anything with which to compare it. I attach a photo of this holder with a tape measure laid upon it. Measuring with a ruler, I get the following:


The centre distance between the Vees is just under 92mm, the pulling feature narrow gap is 39mm, the wide gap is 50mm and the overall depth of the rear face recess is 15mm (all to nearest mm).


Is there perhaps another name that copied the concept but with different size ranges?


Eddie


eddie.draper@btinternet.com
 

Thanks for your response, George.


Yes, the vees are 90 degrees. My ruler measured dimension of slightly less than 92mm should be close enough for purposes of identification, as I used corresponding features on each V, rather than trying to guess their mid points (they have flat points (as it were)).


Eddie




------ Original Message ------
From: "George Meinschein via groups.io" <gmeinschein@...>
To: SouthBendLathe@groups.io
Sent: Saturday, 24 Dec, 22 At 15:25
Subject: Re: [SouthBendLathe] Dickson / Bison toolpost dimensions

Eddie,
Are the V grooves 90 degrees? If so, I think you can lay one of the V faces on a flat surface, measure the height of the other flat V face, and then use that measurement times the square root of 2 to get the center distance between the V grooves. I probably should have scribbled a sketch to make sure I’m not off on my thinking. Let me know if that helps.

Thanks,
George H. Meinschein, P.E.
Firearm and Ballistics Engineering LLC
150 Brittany Drive
Freehold, NJ 07728
gmeinschein@...
Cell#: 732-580-1736


Sent from Proton Mail for iOS


On Sat, Dec 24, 2022 at 5:18 AM, eddie.draper@... via groups.io <eddie.draper@...> wrote:

Dear all,


Does anybody have a Dickson / Bison S3 or T3 size toolpost on which they could please measure the distance between centres of the mounting Vees? I have a toolholder that is a none standard length, somewhere between sizes 2 & 3, and none of my web searches have turned up this vital piece of i/d information. I'm hoping it is a size 3, but I have no access to anything with which to compare it. I attach a photo of this holder with a tape measure laid upon it. Measuring with a ruler, I get the following:


The centre distance between the Vees is just under 92mm, the pulling feature narrow gap is 39mm, the wide gap is 50mm and the overall depth of the rear face recess is 15mm (all to nearest mm).


Is there perhaps another name that copied the concept but with different size ranges?


Eddie


--
-George M.


eddie.draper@btinternet.com
 

Thanks George, but that's one I'd found already. No useful information for this purpose.


Eddie




------ Original Message ------
From: "George Meinschein via groups.io" <gmeinschein@...>
To: SouthBendLathe@groups.io
Sent: Saturday, 24 Dec, 22 At 15:34
Subject: Re: [SouthBendLathe] Dickson / Bison toolpost dimensions

Eddie,
See if this gets you the toolpost dimensions you’re looking for:


Thanks,
George H. Meinschein, P.E.
Firearm and Ballistics Engineering LLC
150 Brittany Drive
Freehold, NJ 07728
gmeinschein@...
Cell#: 732-580-1736


Sent from Proton Mail for iOS


On Sat, Dec 24, 2022 at 10:25 AM, George Meinschein via groups.io <gmeinschein@...> wrote:
Eddie,
Are the V grooves 90 degrees? If so, I think you can lay one of the V faces on a flat surface, measure the height of the other flat V face, and then use that measurement times the square root of 2 to get the center distance between the V grooves. I probably should have scribbled a sketch to make sure I’m not off on my thinking. Let me know if that helps.

Thanks,
George H. Meinschein, P.E.
Firearm and Ballistics Engineering LLC
150 Brittany Drive
Freehold, NJ 07728
gmeinschein@...
Cell#: 732-580-1736


Sent from Proton Mail for iOS


On Sat, Dec 24, 2022 at 5:18 AM, eddie.draper@... via groups.io <eddie.draper@...> wrote:

Dear all,


Does anybody have a Dickson / Bison S3 or T3 size toolpost on which they could please measure the distance between centres of the mounting Vees? I have a toolholder that is a none standard length, somewhere between sizes 2 & 3, and none of my web searches have turned up this vital piece of i/d information. I'm hoping it is a size 3, but I have no access to anything with which to compare it. I attach a photo of this holder with a tape measure laid upon it. Measuring with a ruler, I get the following:


The centre distance between the Vees is just under 92mm, the pulling feature narrow gap is 39mm, the wide gap is 50mm and the overall depth of the rear face recess is 15mm (all to nearest mm).


Is there perhaps another name that copied the concept but with different size ranges?


Eddie


--
-George M.

--
-George M.


mike allen
 

        Homemade ? You might ask over on the Practical Machinist forum  https://www.practicalmachinist.com/forum/


    animal


On 12/24/2022 2:18 AM, eddie.draper@... via groups.io wrote:

Dear all,


Does anybody have a Dickson / Bison S3 or T3 size toolpost on which they could please measure the distance between centres of the mounting Vees? I have a toolholder that is a none standard length, somewhere between sizes 2 & 3, and none of my web searches have turned up this vital piece of i/d information. I'm hoping it is a size 3, but I have no access to anything with which to compare it. I attach a photo of this holder with a tape measure laid upon it. Measuring with a ruler, I get the following:


The centre distance between the Vees is just under 92mm, the pulling feature narrow gap is 39mm, the wide gap is 50mm and the overall depth of the rear face recess is 15mm (all to nearest mm).


Is there perhaps another name that copied the concept but with different size ranges?


Eddie


George Meinschein
 

Eddie,
See if this gets you the toolpost dimensions you’re looking for:


Thanks,
George H. Meinschein, P.E.
Firearm and Ballistics Engineering LLC
150 Brittany Drive
Freehold, NJ 07728
gmeinschein@...
Cell#: 732-580-1736


Sent from Proton Mail for iOS


On Sat, Dec 24, 2022 at 10:25 AM, George Meinschein via groups.io <gmeinschein@...> wrote:
Eddie,
Are the V grooves 90 degrees?  If so, I think you can lay one of the V faces on a flat surface, measure the height of the other flat V face, and then use that measurement times the square root of 2 to get the center distance between the V grooves.  I probably should have scribbled a sketch to make sure I’m not off on my thinking.  Let me know if that helps.

Thanks,
George H. Meinschein, P.E.
Firearm and Ballistics Engineering LLC
150 Brittany Drive
Freehold, NJ 07728
gmeinschein@...
Cell#: 732-580-1736


Sent from Proton Mail for iOS


On Sat, Dec 24, 2022 at 5:18 AM, eddie.draper@... via groups.io <eddie.draper@...> wrote:

Dear all,


Does anybody have a Dickson / Bison S3 or T3 size toolpost on which they could please measure the distance between centres of the mounting Vees? I have a toolholder that is a none standard length, somewhere between sizes 2 & 3, and none of my web searches have turned up this vital piece of i/d information. I'm hoping it is a size 3, but I have no access to anything with which to compare it. I attach a photo of this holder with a tape measure laid upon it. Measuring with a ruler, I get the following:


The centre distance between the Vees is just under 92mm, the pulling feature narrow gap is 39mm, the wide gap is 50mm and the overall depth of the rear face recess is 15mm (all to nearest mm).


Is there perhaps another name that copied the concept but with different size ranges?


Eddie


--
-George M.

--
-George M.


George Meinschein
 

Eddie,
Are the V grooves 90 degrees?  If so, I think you can lay one of the V faces on a flat surface, measure the height of the other flat V face, and then use that measurement times the square root of 2 to get the center distance between the V grooves.  I probably should have scribbled a sketch to make sure I’m not off on my thinking.  Let me know if that helps.

Thanks,
George H. Meinschein, P.E.
Firearm and Ballistics Engineering LLC
150 Brittany Drive
Freehold, NJ 07728
gmeinschein@...
Cell#: 732-580-1736


Sent from Proton Mail for iOS


On Sat, Dec 24, 2022 at 5:18 AM, eddie.draper@... via groups.io <eddie.draper@...> wrote:

Dear all,


Does anybody have a Dickson / Bison S3 or T3 size toolpost on which they could please measure the distance between centres of the mounting Vees? I have a toolholder that is a none standard length, somewhere between sizes 2 & 3, and none of my web searches have turned up this vital piece of i/d information. I'm hoping it is a size 3, but I have no access to anything with which to compare it. I attach a photo of this holder with a tape measure laid upon it. Measuring with a ruler, I get the following:


The centre distance between the Vees is just under 92mm, the pulling feature narrow gap is 39mm, the wide gap is 50mm and the overall depth of the rear face recess is 15mm (all to nearest mm).


Is there perhaps another name that copied the concept but with different size ranges?


Eddie


--
-George M.


eddie.draper@btinternet.com
 

Dear all,


Does anybody have a Dickson / Bison S3 or T3 size toolpost on which they could please measure the distance between centres of the mounting Vees? I have a toolholder that is a none standard length, somewhere between sizes 2 & 3, and none of my web searches have turned up this vital piece of i/d information. I'm hoping it is a size 3, but I have no access to anything with which to compare it. I attach a photo of this holder with a tape measure laid upon it. Measuring with a ruler, I get the following:


The centre distance between the Vees is just under 92mm, the pulling feature narrow gap is 39mm, the wide gap is 50mm and the overall depth of the rear face recess is 15mm (all to nearest mm).


Is there perhaps another name that copied the concept but with different size ranges?


Eddie