That link will work on your computer. It doesn't work on mine because I don't have the file at all, not to mention the same file structure you have. I'd like to have it! I do have the casting, but not the drawings. Gonna have to fix that one of these days. Also want the Atlas version...
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Friday, September 20, 2024 at 11:32:27 AM CDT, ww_big_al via groups.io <arknack@...> wrote:
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Lets try it again.? The email program must have trimmed it
Al
> -----Original Message----- > From: [email protected] < [email protected]> On Behalf > Of John Dammeyer > Sent: Friday, September 20, 2024 12:28 PM > To: [email protected]> Subject: Re: [SouthBendLathe] MLA Crossslide > > That link doesn't work. > > > -----Original Message----- > > From: [email protected] [mailto: [email protected]] On > > Behalf Of ww_big_al via groups.io > > Sent: September 20, 2024 4:14 AM > > To: [email protected]> > Subject: Re: [SouthBendLathe] MLA Crossslide > > > > I purchased one of their kit several years ago. That project is still > > on my never ending to-do list.? The casting is well done. Stress > > relieved means it has been heated after casting to relieve the > > internal pressures so it won't warp after machining. In the old days, > > they would let the parts age a year or more to relieve the stresses. > > > > Paula on Practical Machinist did a excellent article on machining > > these. Here is the link. > > > file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/So > > uthbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T- > > Slotted%20Cross%20Slide.htm > > > > Al- > > > > > -----Original Message----- > > > From: [email protected] < [email protected]> On > Behalf > > > Of mike allen > > > Sent: Friday, September 20, 2024 1:18 AM > > > To: [email protected]> > > Subject: [SouthBendLathe] MLA Crossslide > > > > > > Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? > > > I'm thiking of just buying the plans & wondering do the drawings > > > include the dimensions for the Gibb too ? They also mention that if > > > ya buy the casting they are " stress relieved where necessary " just > > > what does that mean ? I have a bud that's gonna give me the cast iron . > > > > > > thanks > > > > > > animal > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
|
Hi There,
?
Well, if I shorten it, I loose some of its functionality.
When I am ready to tackle this project, I'll do a mock
up and see if it is going to be feasible.
?
Good Luck!
-Blue Chips-
Webb
?
|
??? Can ya shorten the new crossslide some when ya make it ?
??? animal
On 9/20/24 4:31 PM, wlw19958 via
groups.io wrote:
toggle quoted message
Show quoted text
Hi There,
?
Yes, I know about the extension for the Taper Attachment
(I even knew the guy that designed it and got MLA to
make it).? I just don't know if it will function with the
Heavy
Ten taper (it was designed for the 9 inch/10K lathes in
mind).
I did buy it and have it sitting in the same drawer with the
MLA cross slide attachment.? What I haven't investigated is
how much loss of travel will I experience using the MLA
cross slide compared with the original cross slide.
?
You see, the 10R/10L cross slide is very short compared to
the 9 inch/10K cross slide and it may not be possible to use
it in conjunction with the taper attachment.
?
At present, my Heavy Ten doesn't have a taper on it but I
have accumulated most of the parts to put one on.? I am
concerned the bracket with the tube and bearings that
support the telescoping cross feed screw will be in the way
or at least will limit the MLA cross slide's travel.?
?
The one advantage of the MLA cross slide is there is going
to be a great deal more contact area in the dovetail ways?
between the saddle and the cross slide.? This also compli-
cates the making of a tapered gib so I decided to use a
plain straight gib like the 9 inch/10K uses.
?
Of course, this is all theory.? If it looks like the MLA
cross
slide won't work, I can always put it on my 9 inch cabinet
model I have (as long as I haven't machined it yet).
?
Good Luck!
-Blue Chips-
Webb
?
|
Hi There,
?
Yes, I know about the extension for the Taper Attachment
(I even knew the guy that designed it and got MLA to
make it).? I just don't know if it will function with the Heavy
Ten taper (it was designed for the 9 inch/10K lathes in mind).
I did buy it and have it sitting in the same drawer with the
MLA cross slide attachment.? What I haven't investigated is
how much loss of travel will I experience using the MLA
cross slide compared with the original cross slide.
?
You see, the 10R/10L cross slide is very short compared to
the 9 inch/10K cross slide and it may not be possible to use
it in conjunction with the taper attachment.
?
At present, my Heavy Ten doesn't have a taper on it but I
have accumulated most of the parts to put one on.? I am
concerned the bracket with the tube and bearings that
support the telescoping cross feed screw will be in the way
or at least will limit the MLA cross slide's travel.?
?
The one advantage of the MLA cross slide is there is going
to be a great deal more contact area in the dovetail ways?
between the saddle and the cross slide.? This also compli-
cates the making of a tapered gib so I decided to use a
plain straight gib like the 9 inch/10K uses.
?
Of course, this is all theory.? If it looks like the MLA cross
slide won't work, I can always put it on my 9 inch cabinet
model I have (as long as I haven't machined it yet).
?
Good Luck!
-Blue Chips-
Webb
?
|
??? There's a extension for the crossslide to make it work with
the taper attachment , Like all their stuff ya can just buy the
drawings if ya want .
??? animal
On 9/20/24 12:18 PM, wlw19958 via
groups.io wrote:
toggle quoted message
Show quoted text
Hi There,
?
I purchased one of those kits earlier this year
and it is currently sitting in a drawer.? I plan to?
adapt it to my Heavy Ten.? There is plenty of
metal and I am pretty sure it will work.? I will
have to make changes to the machining plans
and I am not quite sure if it will "play nice"
with the taper attachment but I'll tackle the
problem when necessary.
?
Good Luck!
-Blue Chips-
Webb
?
|
Hi There,
?
I purchased one of those kits earlier this year
and it is currently sitting in a drawer.? I plan to?
adapt it to my Heavy Ten.? There is plenty of
metal and I am pretty sure it will work.? I will
have to make changes to the machining plans
and I am not quite sure if it will "play nice"
with the taper attachment but I'll tackle the
problem when necessary.
?
Good Luck!
-Blue Chips-
Webb
?
|
Thanks for that link Al, makes fascinating reading, but I doubt whether the information therein is of much practical value to someone with an old SB lathe! ?To put that into context, it deals only with cutting edges made from Cubic Boron Nitride, and the cutting speeds of interest range from 600 to 1200 m/ min. ?On a 9" diameter (229 mm) diameter workpiece, those are 834 to 1668 ?RPM! ?Just shows how far we've progressed. ? Eddie
?
------ Original Message ------
From: arknack@...
To: [email protected]
Sent: Friday, September 20th 2024, 13:19
Subject: Re: [SouthBendLathe] MLA Crossslide
? Here is a very technical article on tool life between aged and non-aged CI. Bottom line is aged cast Iron extend the machine tool life. ? Al ? ? ? ? I imagine that stress relieved where necesary actually means where appropriate.? Castings for the slides, yes, castings for a handle, no. As an aside, I have never understood how aging at ambient temperature releases any part of locked in stresses created as a result of differential temperatures during the cooling of a casting.? I would have thought it would be necessary to apply external loads so that areas with a high residual tensile stress were forced to yield somewhat.? After all, that is what results in the deflections seen in service on castings or fabrications that have not been properly stress relieved at birth. -------- Original message -------- Date: 20/09/2024 12:14 (GMT+00:00) Subject: Re: [SouthBendLathe] MLA Crossslide I purchased one of their kit several years ago. That project is still on my never ending to-do list.? The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
> -----Original Message-----
> From: [email protected] <[email protected]> On Behalf
> Of mike allen
> Sent: Friday, September 20, 2024 1:18 AM
> To: [email protected]
> Subject: [SouthBendLathe] MLA Crossslide
>?
> Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
> thiking of just buying the plans & wondering do the drawings include the
> dimensions for the Gibb too ? They also mention that if ya buy the casting
> they are " stress relieved where necessary " just what does that mean ? I
> have a bud that's gonna give me the cast iron .
>?
> thanks
>?
> animal
>?
>?
>?
>?
>?
?
|
That worked once I edited the text to put the link back together.
toggle quoted message
Show quoted text
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of ww_big_al via groups.io
Sent: September 20, 2024 9:39 AM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
Try this one. Looks like my computer kept going to a saved version.
cross-slide.177054/page-5#post-1449260
Al
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
ww_big_al via groups.io
Sent: Friday, September 20, 2024 12:32 PM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/So
u
thbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/So
u
thbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
Lets try it again. The email program must have trimmed it
Al
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
John Dammeyer
Sent: Friday, September 20, 2024 12:28 PM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
That link doesn't work.
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of ww_big_al via groups.io
Sent: September 20, 2024 4:14 AM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
I purchased one of their kit several years ago. That project is
still on my never ending to-do list. The casting is well done.
Stress relieved means it has been heated after casting to relieve
the internal pressures so it won't warp after machining. In the
old days, they would let the parts age a year or more to relieve
the
stresses.
Paula on Practical Machinist did a excellent article on machining
these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/So
uthbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
Al-
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ?
I'm thiking of just buying the plans & wondering do the drawings
include the dimensions for the Gibb too ? They also mention that
if ya buy the casting they are " stress relieved where necessary "
just what does that mean ? I have a bud that's gonna give me the
cast iron
.
thanks
animal
|
One thing that MLA advertises is that their projects are made for the lathe ON the lathe. If I remember correctly the extended crossslide needed use of a mill for the T-slots. Great drawing package and instructions with each project. So far I’ve made the extended crossslide, a faceplate, steady rest, boring/milling transfer block, Still sitting on my shelf are the boring head and ball turning toolpost. Now to find the time…..
al.
toggle quoted message
Show quoted text
On Sep 20, 2024, at 05:13, ww_big_al via groups.io <arknack@...> wrote:
I purchased one of their kit several years ago. That project is still on my never ending to-do list. The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
thiking of just buying the plans & wondering do the drawings include the
dimensions for the Gibb too ? They also mention that if ya buy the casting
they are " stress relieved where necessary " just what does that mean ? I
have a bud that's gonna give me the cast iron .
thanks
animal
|
Try this one. Looks like my computer kept going to a saved version.
-slide.177054/page-5#post-1449260
Al
toggle quoted message
Show quoted text
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of ww_big_al via groups.io
Sent: Friday, September 20, 2024 12:32 PM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Sou
thbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Sou
thbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
Lets try it again. The email program must have trimmed it
Al
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
John Dammeyer
Sent: Friday, September 20, 2024 12:28 PM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
That link doesn't work.
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of ww_big_al via groups.io
Sent: September 20, 2024 4:14 AM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
I purchased one of their kit several years ago. That project is
still on my never ending to-do list. The casting is well done.
Stress relieved means it has been heated after casting to relieve
the internal pressures so it won't warp after machining. In the old
days, they would let the parts age a year or more to relieve the
stresses.
Paula on Practical Machinist did a excellent article on machining
these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/So
uthbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
Al-
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ?
I'm thiking of just buying the plans & wondering do the drawings
include the dimensions for the Gibb too ? They also mention that
if ya buy the casting they are " stress relieved where necessary "
just what does that mean ? I have a bud that's gonna give me the
cast iron
.
thanks
animal
|
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Lets try it again. The email program must have trimmed it
Al
toggle quoted message
Show quoted text
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of John Dammeyer
Sent: Friday, September 20, 2024 12:28 PM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
That link doesn't work.
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of ww_big_al via groups.io
Sent: September 20, 2024 4:14 AM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
I purchased one of their kit several years ago. That project is still
on my never ending to-do list. The casting is well done. Stress
relieved means it has been heated after casting to relieve the
internal pressures so it won't warp after machining. In the old days,
they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining
these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/So
uthbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
Al-
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ?
I'm thiking of just buying the plans & wondering do the drawings
include the dimensions for the Gibb too ? They also mention that if
ya buy the casting they are " stress relieved where necessary " just
what does that mean ? I have a bud that's gonna give me the cast iron
.
thanks
animal
|
That link doesn't work.
toggle quoted message
Show quoted text
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of ww_big_al via groups.io
Sent: September 20, 2024 4:14 AM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide
I purchased one of their kit several years ago. That project is still on my never
ending to-do list. The casting is well done. Stress relieved means it has been
heated after casting to relieve the internal pressures so it wont warp after
machining. In the old days, they would let the parts age a year or more to
relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here
is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/So
uthbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-
Slotted%20Cross%20Slide.htm
Al-
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
thiking of just buying the plans & wondering do the drawings include the
dimensions for the Gibb too ? They also mention that if ya buy the casting
they are " stress relieved where necessary " just what does that mean ? I
have a bud that's gonna give me the cast iron .
thanks
animal
|
I remember reading that Rolls Royce set their newly cast engine blocks “on the shelf” for some 8 years before machining them, so the internal stresses would be relieved. Don’t know if that is true…
toggle quoted message
Show quoted text
On Sep 20, 2024, at 06:06, Andrei via groups.io <calciu1@...> wrote:
?
Stress relieving took part over more than a year and it was done outdoors. It allowed the parts to freeze in winter. There is a lot of cryogenic treatment of parts done today with liquid nitrogen. They just did not have that in the "good ol'e
days" so they had the parts under the un in summer and in freezing temps in winter. Worked great.
I imagine that stress relieved where necesary actually means where appropriate.? Castings for the slides, yes, castings for a handle, no.
As an aside, I have never understood how aging at ambient temperature releases any part of locked in stresses created as a result of differential temperatures during the cooling of a casting.? I would have thought it would be necessary to apply
external loads so that areas with a high residual tensile stress were forced to yield somewhat.? After all, that is what results in the deflections seen in service on castings or fabrications that have not been properly stress relieved at birth.
-------- Original message --------
From: "ww_big_al via groups.io" <arknack@...>
Date: 20/09/2024 12:14 (GMT+00:00)
Subject: Re: [SouthBendLathe] MLA Crossslide
I purchased one of their kit several years ago. That project is still on my never ending to-do list.? The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the
old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
> -----Original Message-----
> From: [email protected] < [email protected]> On Behalf
> Of mike allen
> Sent: Friday, September 20, 2024 1:18 AM
> To: [email protected]
> Subject: [SouthBendLathe] MLA Crossslide
>
> Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
> thiking of just buying the plans & wondering do the drawings include the
> dimensions for the Gibb too ? They also mention that if ya buy the casting
> they are " stress relieved where necessary " just what does that mean ? I
> have a bud that's gonna give me the cast iron .
>
> thanks
>
> animal
>
>
>
>
>
|
I have one sitting on the shelf too. The casting looks great and I would love to machine it but my mill is to small. I'm planning on getting a bigger mill but in the mean time I'm going to college to learn CNC and use their much bigger machines. I should be able to machine this part with ease. They also have surface grinders which will be very nice for this project. Going back to school after over 50 years has some advantages.?
--
Bill From Socal
|
+++ on the Paula thread. I was going to try and find it for you. I can only wish that I could work to her standards. I think this will answer all your questions.
toggle quoted message
Show quoted text
On 9/20/24 07:13, ww_big_al via groups.io wrote: I purchased one of their kit several years ago. That project is still on my never ending to-do list. The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
thiking of just buying the plans & wondering do the drawings include the
dimensions for the Gibb too ? They also mention that if ya buy the casting
they are " stress relieved where necessary " just what does that mean ? I
have a bud that's gonna give me the cast iron .
thanks
animal
|
Here is a very technical article on tool life between aged and non-aged CI. Bottom line is aged cast Iron extend the machine tool life. ? Al ? ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of eddie.draper@... via groups.io
Sent: Friday, September 20, 2024 8:04 AM
To: [email protected]
Subject: Re: [SouthBendLathe] MLA Crossslide? I imagine that stress relieved where necesary actually means where appropriate.? Castings for the slides, yes, castings for a handle, no. As an aside, I have never understood how aging at ambient temperature releases any part of locked in stresses created as a result of differential temperatures during the cooling of a casting.? I would have thought it would be necessary to apply external loads so that areas with a high residual tensile stress were forced to yield somewhat.? After all, that is what results in the deflections seen in service on castings or fabrications that have not been properly stress relieved at birth. -------- Original message -------- Date: 20/09/2024 12:14 (GMT+00:00) Subject: Re: [SouthBendLathe] MLA Crossslide I purchased one of their kit several years ago. That project is still on my never ending to-do list.? The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
> -----Original Message-----
> From: [email protected] <[email protected]> On Behalf
> Of mike allen
> Sent: Friday, September 20, 2024 1:18 AM
> To: [email protected]
> Subject: [SouthBendLathe] MLA Crossslide
>
> Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
> thiking of just buying the plans & wondering do the drawings include the
> dimensions for the Gibb too ? They also mention that if ya buy the casting
> they are " stress relieved where necessary " just what does that mean ? I
> have a bud that's gonna give me the cast iron .
>
> thanks
>
> animal
>
>
>
>
>
|
Stress relieving took part over more than a year and it was done outdoors. It allowed the parts to freeze in winter. There is a lot of cryogenic treatment of parts done today with liquid nitrogen. They just did not have that in the "good ol'e
days" so they had the parts under the un in summer and in freezing temps in winter. Worked great.
toggle quoted message
Show quoted text
I imagine that stress relieved where necesary actually means where appropriate.? Castings for the slides, yes, castings for a handle, no.
As an aside, I have never understood how aging at ambient temperature releases any part of locked in stresses created as a result of differential temperatures during the cooling of a casting.? I would have thought it would be necessary to apply
external loads so that areas with a high residual tensile stress were forced to yield somewhat.? After all, that is what results in the deflections seen in service on castings or fabrications that have not been properly stress relieved at birth.
-------- Original message --------
From: "ww_big_al via groups.io" <arknack@...>
Date: 20/09/2024 12:14 (GMT+00:00)
Subject: Re: [SouthBendLathe] MLA Crossslide
I purchased one of their kit several years ago. That project is still on my never ending to-do list.? The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the
old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
> -----Original Message-----
> From: [email protected] < [email protected]> On Behalf
> Of mike allen
> Sent: Friday, September 20, 2024 1:18 AM
> To: [email protected]
> Subject: [SouthBendLathe] MLA Crossslide
>
> Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
> thiking of just buying the plans & wondering do the drawings include the
> dimensions for the Gibb too ? They also mention that if ya buy the casting
> they are " stress relieved where necessary " just what does that mean ? I
> have a bud that's gonna give me the cast iron .
>
> thanks
>
> animal
>
>
>
>
>
|
I imagine that stress relieved where necesary actually means where appropriate.? Castings for the slides, yes, castings for a handle, no.
As an aside, I have never understood how aging at ambient temperature releases any part of locked in stresses created as a result of differential temperatures during the cooling of a casting.? I would have thought it would be necessary to apply external loads so that areas with a high residual tensile stress were forced to yield somewhat.? After all, that is what results in the deflections seen in service on castings or fabrications that have not been properly stress relieved at birth.
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-------- Original message -------- From: "ww_big_al via groups.io" <arknack@...> Date: 20/09/2024 12:14 (GMT+00:00) Subject: Re: [SouthBendLathe] MLA Crossslide
I purchased one of their kit several years ago. That project is still on my never ending to-do list.? The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the old days, they would let the parts age a year or more to relieve the stresses. Paula on Practical Machinist did a excellent article on machining these. Here is the link. file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm Al- > -----Original Message----- > From: [email protected] < [email protected]> On Behalf > Of mike allen > Sent: Friday, September 20, 2024 1:18 AM > To: [email protected]> Subject: [SouthBendLathe] MLA Crossslide > > Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm > thiking of just buying the plans & wondering do the drawings include the > dimensions for the Gibb too ? They also mention that if ya buy the casting > they are " stress relieved where necessary " just what does that mean ? I > have a bud that's gonna give me the cast iron . > > thanks > > animal > > > > >
|
Going back a lot of years…. I bought the crossslide casting/instructions kit and completed it. Been on my 10k ever since and never give it a second thought. I bought a number of MLAs other SB kits and have been happy with all of them. I think I still have 3 kits left to build.
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On Sep 20, 2024, at 05:14, ww_big_al via groups.io <arknack@...> wrote:
?I purchased one of their kit several years ago. That project is still on my never ending to-do list. The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
thiking of just buying the plans & wondering do the drawings include the
dimensions for the Gibb too ? They also mention that if ya buy the casting
they are " stress relieved where necessary " just what does that mean ? I
have a bud that's gonna give me the cast iron .
thanks
animal
|
I purchased one of their kit several years ago. That project is still on my never ending to-do list. The casting is well done. Stress relieved means it has been heated after casting to relieve the internal pressures so it wont warp after machining. In the old days, they would let the parts age a year or more to relieve the stresses.
Paula on Practical Machinist did a excellent article on machining these. Here is the link.
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
Al-
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Show quoted text
-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of mike allen
Sent: Friday, September 20, 2024 1:18 AM
To: [email protected]
Subject: [SouthBendLathe] MLA Crossslide
Has anyone here don the MLA Crossslide for a South Bend 9A lathe ? I'm
thiking of just buying the plans & wondering do the drawings include the
dimensions for the Gibb too ? They also mention that if ya buy the casting
they are " stress relieved where necessary " just what does that mean ? I
have a bud that's gonna give me the cast iron .
thanks
animal
|
Bill in OKC too
ww_big_al