The maint manager of a largish factory..a good friend of mine
actually, died unexectedly a couple weeks ago. Damnit.

But one of the unfinished projects he left behind, is a BP with a
jammed/broken gib in the knee.

From what I gather..its jammed really good. When the facilities
manager asked me if I wanted to take a shot at it...he pointed out
that there is about 3/4" of gib sticking out of the bottom of the
knee..which is NOT a good thing.

Anyone have any secret tips, suggestions/angles of attack on how to
get the bitch out?

Currently they have the screw boss unbolted and hanging..so the table
is being entirely held up by the gib.

This is a bitch of a task at the best of times, so before I tackled
it...(either I fix it and they pay..or I dont fix it and they dont
pay..bet between me and the manager...sigh) I thought Id ask about any
tricks that I may not be aware of. But Im obligated to try. Shrug.

Thanks in advance

Gunner

"If thy pride is sorely vexed when others disparage your offering, be
as lamb's wool is to cold rain and the Gore-tex of Odin's raiment
is to gull**** in the gale, for thy angst shall vex them not at
all. Yea, they shall scorn thee all the more. Rejoice in
sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33

There was just a thread on this last week.

http://tinyurl.com/j9tve



--
(©¿©) An apple a day keeps the doctor away.
Two apples a day gets the doctor's OK.
Five a day makes you a fruit grower like me.

Karl Townsend

Practical Machinist site has a BP section - it's covered there.
The job is non trivial, the gib alone must be driven upwards.
From memory this involves cutting a hole from inside the base such that
tapered wedges can be applied to hopefully apply enough force to
unstick it.
I know BP's are perfect G but this "feature" on usually a well worked
machine is a real gotcha.
As prevention I'd give away a little down travel by mechanical blocking
- say 1/2 in or whatever - so that if the unthinkable happens some knee
travel is still available - block the gib and lower the knee over it,

allenpl

On Sat, 20 May 2006 16:41:09 GMT, Gunner wrote:

The maint manager of a largish factory..a good friend of mine
actually, died unexectedly a couple weeks ago. Damnit.

But one of the unfinished projects he left behind, is a BP with a
jammed/broken gib in the knee.

From what I gather..its jammed really good. When the facilities
manager asked me if I wanted to take a shot at it...he pointed out
that there is about 3/4" of gib sticking out of the bottom of the
knee..which is NOT a good thing.

Anyone have any secret tips, suggestions/angles of attack on how to
get the bitch out?



Thinking of the way we remove shrunk on steam turbine wheels from their shafts
at work...

Can you hire heating coils to go round the knee (lagged on for effectiveness).
or be brave and build a muffle round it and use large propane torches. All
this with the column filled with ice water? The knee is probably too small to
wrap a box of romex round it, couple it to an AC welder and induction heat it,
although it would be a good trick if it worked. You might not get the key
loosened, but you might get enough load off it to be able to move it with more
traditional methods.

There is a risk of distortion. But I suspect that there's a risk of distortion
with any method that will work.


Keep us posted Gunner.


Good luck
Mark Rand
RTFM

In article , Mark Rand says...

Keep us posted Gunner.

I seem to recall that Grant went through this issue a while
ago...

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================

jim rozen wrote:
In article , Mark Rand says...


Keep us posted Gunner.


I seem to recall that Grant went through this issue a while
ago...

No, my knee gib is fine, don't remember it ever sticking. - GWE

In article , Grant Erwin says...

I seem to recall that Grant went through this issue a while
ago...

No, my knee gib is fine, don't remember it ever sticking. - GWE

Dang. Somebody here (and I'm sure it was here, because it was
before I was into the practical machinist board) went through
it big time here. I seem to recall it involved tapping the
end of the gib and extracting it with a slap hammer or puller or
something.

But I can't remember who it was, if not you.

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================

Jim, you're a smart guy, why support something like the practical machinist
forum when we already have rcm?

GWE

jim rozen wrote:

In article , Grant Erwin says...


I seem to recall that Grant went through this issue a while
ago...

No, my knee gib is fine, don't remember it ever sticking. - GWE


Dang. Somebody here (and I'm sure it was here, because it was
before I was into the practical machinist board) went through
it big time here. I seem to recall it involved tapping the
end of the gib and extracting it with a slap hammer or puller or
something.

But I can't remember who it was, if not you.

Jim

In article , Grant Erwin says...

Jim, you're a smart guy, why support something like the practical machinist
forum when we already have rcm?

1) They have a dedicated hardinge sub-board.

2) There's no OT posting on the general board.

3) Political and economic posts are confined to one sub-board.

4) There's a dedicated SB sub-board.

5) There's a dedicated antique machinery sub-board that's very active.

In short, try it, you might like it.

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================

The maint manager of a largish factory..a good friend of mine
actually, died unexectedly a couple weeks ago. Damnit.

But one of the unfinished projects he left behind, is a BP with a
jammed/broken gib in the knee.

From what I gather..its jammed really good. When the facilities
manager asked me if I wanted to take a shot at it...he pointed out
that there is about 3/4" of gib sticking out of the bottom of the
knee..which is NOT a good thing.

Anyone have any secret tips, suggestions/angles of attack on how to
get the bitch out?

Currently they have the screw boss unbolted and hanging..so the table
is being entirely held up by the gib.

This is a bitch of a task at the best of times, so before I tackled
it...(either I fix it and they pay..or I dont fix it and they dont
pay..bet between me and the manager...sigh) I thought Id ask about any
tricks that I may not be aware of. But Im obligated to try. Shrug.

Thanks in advance

Gunner

"If thy pride is sorely vexed when others disparage your offering, be
as lamb's wool is to cold rain and the Gore-tex of Odin's raiment
is to gull**** in the gale, for thy angst shall vex them not at
all. Yea, they shall scorn thee all the more. Rejoice in
sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33
I don't know if it would work or not, but possibly a pipe clamp (like
used in woodworking) positioned under the "sticking out" part with
the other end on top of the knee and then turn in the clamping
screw...
Ken.

Ken Sterling (Ken Sterling) wrote:
The maint manager of a largish factory..a good friend of mine
actually, died unexectedly a couple weeks ago. Damnit.

But one of the unfinished projects he left behind, is a BP with a
jammed/broken gib in the knee.

From what I gather..its jammed really good. When the facilities
manager asked me if I wanted to take a shot at it...he pointed out
that there is about 3/4" of gib sticking out of the bottom of the
knee..which is NOT a good thing.

Anyone have any secret tips, suggestions/angles of attack on how to
get the bitch out?

Currently they have the screw boss unbolted and hanging..so the table
is being entirely held up by the gib.

This is a bitch of a task at the best of times, so before I tackled
it...(either I fix it and they pay..or I dont fix it and they dont
pay..bet between me and the manager...sigh) I thought Id ask about
any tricks that I may not be aware of. But Im obligated to try.
Shrug.

Thanks in advance

Gunner

"If thy pride is sorely vexed when others disparage your offering,
be as lamb's wool is to cold rain and the Gore-tex of Odin's
raiment is to gull**** in the gale, for thy angst shall vex them
not at all. Yea, they shall scorn thee all the more. Rejoice
in sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33
I don't know if it would work or not, but possibly a pipe clamp (like
used in woodworking) positioned under the "sticking out" part with
the other end on top of the knee and then turn in the clamping
screw...
Ken.

For that it's worth:
This is "out in the wind" as I don't have first hand experience but...
Place a hydraulic jack under the knee and put a couple of tons on it. Then
another jack/big hammer/drift carefully rigged to bear on the bottom of the
gib. IIRC the gib removes upwards.

Ken.

--
Volunteer your idle computer time for cancer research
http//www.grid.org/download/gold/download.htm
Return address courtesy of Spammotel http://www.spammotel.com/

Ken Davey wrote:

Ken Sterling (Ken Sterling) wrote:

The maint manager of a largish factory..a good friend of mine
actually, died unexectedly a couple weeks ago. Damnit.

But one of the unfinished projects he left behind, is a BP with a
jammed/broken gib in the knee.

From what I gather..its jammed really good. When the facilities
manager asked me if I wanted to take a shot at it...he pointed out
that there is about 3/4" of gib sticking out of the bottom of the
knee..which is NOT a good thing.

Anyone have any secret tips, suggestions/angles of attack on how to
get the bitch out?

Currently they have the screw boss unbolted and hanging..so the table
is being entirely held up by the gib.

This is a bitch of a task at the best of times, so before I tackled
it...(either I fix it and they pay..or I dont fix it and they dont
pay..bet between me and the manager...sigh) I thought Id ask about
any tricks that I may not be aware of. But Im obligated to try.
Shrug.

Thanks in advance

Gunner

"If thy pride is sorely vexed when others disparage your offering,
be as lamb's wool is to cold rain and the Gore-tex of Odin's
raiment is to gull**** in the gale, for thy angst shall vex them
not at all. Yea, they shall scorn thee all the more. Rejoice
in sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33

I don't know if it would work or not, but possibly a pipe clamp (like
used in woodworking) positioned under the "sticking out" part with
the other end on top of the knee and then turn in the clamping
screw...
Ken.


For that it's worth:
This is "out in the wind" as I don't have first hand experience but...
Place a hydraulic jack under the knee and put a couple of tons on it. Then
another jack/big hammer/drift carefully rigged to bear on the bottom of the
gib. IIRC the gib removes upwards.

Ken.



If you beat on the bottom of the gib it will expand and make matters
worse. You have to lock the gib in position and then push the knee
downward, holding the gib stationary to the base.

John

On Mon, 22 May 2006 18:05:36 -0400, john
wrote:



Ken Davey wrote:

Ken Sterling (Ken Sterling) wrote:

The maint manager of a largish factory..a good friend of mine
actually, died unexectedly a couple weeks ago. Damnit.

But one of the unfinished projects he left behind, is a BP with a
jammed/broken gib in the knee.

From what I gather..its jammed really good. When the facilities
manager asked me if I wanted to take a shot at it...he pointed out
that there is about 3/4" of gib sticking out of the bottom of the
knee..which is NOT a good thing.

Anyone have any secret tips, suggestions/angles of attack on how to
get the bitch out?

Currently they have the screw boss unbolted and hanging..so the table
is being entirely held up by the gib.

This is a bitch of a task at the best of times, so before I tackled
it...(either I fix it and they pay..or I dont fix it and they dont
pay..bet between me and the manager...sigh) I thought Id ask about
any tricks that I may not be aware of. But Im obligated to try.
Shrug.

Thanks in advance

Gunner

"If thy pride is sorely vexed when others disparage your offering,
be as lamb's wool is to cold rain and the Gore-tex of Odin's
raiment is to gull**** in the gale, for thy angst shall vex them
not at all. Yea, they shall scorn thee all the more. Rejoice
in sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33

I don't know if it would work or not, but possibly a pipe clamp (like
used in woodworking) positioned under the "sticking out" part with
the other end on top of the knee and then turn in the clamping
screw...
Ken.


For that it's worth:
This is "out in the wind" as I don't have first hand experience but...
Place a hydraulic jack under the knee and put a couple of tons on it. Then
another jack/big hammer/drift carefully rigged to bear on the bottom of the
gib. IIRC the gib removes upwards.

Ken.



If you beat on the bottom of the gib it will expand and make matters
worse. You have to lock the gib in position and then push the knee
downward, holding the gib stationary to the base.

John




The big problem with BPs..is that the area directly under the gib is
dished for coolant. There is NO flatspot you can put anything like a
jack on and get a straight up push. Im thinking about laying a piece
of railroad track across the dished area and using a very short
automotive scissors jack as the first attempt, with a chunk of 4x4
between the top of the table and the bottom of the ram to hold it in
place.

A portapower with the short ram might be interesting..but I dont have
one. Shrug

Gunner

"If thy pride is sorely vexed when others disparage your offering, be
as lamb's wool is to cold rain and the Gore-tex of Odin's raiment
is to gull**** in the gale, for thy angst shall vex them not at
all. Yea, they shall scorn thee all the more. Rejoice in
sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33

Gunner wrote:
On Mon, 22 May 2006 18:05:36 -0400, john
wrote:



Ken Davey wrote:


Ken Sterling (Ken Sterling) wrote:


The maint manager of a largish factory..a good friend of mine
actually, died unexectedly a couple weeks ago. Damnit.

But one of the unfinished projects he left behind, is a BP with a
jammed/broken gib in the knee.


From what I gather..its jammed really good. When the facilities

manager asked me if I wanted to take a shot at it...he pointed out
that there is about 3/4" of gib sticking out of the bottom of the
knee..which is NOT a good thing.

Anyone have any secret tips, suggestions/angles of attack on how to
get the bitch out?

Currently they have the screw boss unbolted and hanging..so the table
is being entirely held up by the gib.

This is a bitch of a task at the best of times, so before I tackled
it...(either I fix it and they pay..or I dont fix it and they dont
pay..bet between me and the manager...sigh) I thought Id ask about
any tricks that I may not be aware of. But Im obligated to try.
Shrug.

Thanks in advance

Gunner

"If thy pride is sorely vexed when others disparage your offering,
be as lamb's wool is to cold rain and the Gore-tex of Odin's
raiment is to gull**** in the gale, for thy angst shall vex them
not at all. Yea, they shall scorn thee all the more. Rejoice
in sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33

I don't know if it would work or not, but possibly a pipe clamp (like
used in woodworking) positioned under the "sticking out" part with
the other end on top of the knee and then turn in the clamping
screw...
Ken.


For that it's worth:
This is "out in the wind" as I don't have first hand experience but...
Place a hydraulic jack under the knee and put a couple of tons on it. Then
another jack/big hammer/drift carefully rigged to bear on the bottom of the
gib. IIRC the gib removes upwards.

Ken.



If you beat on the bottom of the gib it will expand and make matters
worse. You have to lock the gib in position and then push the knee
downward, holding the gib stationary to the base.

John





The big problem with BPs..is that the area directly under the gib is
dished for coolant. There is NO flatspot you can put anything like a
jack on and get a straight up push. Im thinking about laying a piece
of railroad track across the dished area and using a very short
automotive scissors jack as the first attempt, with a chunk of 4x4
between the top of the table and the bottom of the ram to hold it in
place.

A portapower with the short ram might be interesting..but I dont have
one. Shrug

Gunner

"If thy pride is sorely vexed when others disparage your offering, be
as lamb's wool is to cold rain and the Gore-tex of Odin's raiment
is to gull**** in the gale, for thy angst shall vex them not at
all. Yea, they shall scorn thee all the more. Rejoice in
sharing what you have to share without expectation of adoration,
knowing that sharing your treasure does not diminish your treasure
but enriches it."

- Onni 1:33

Drill a hole in the gib and way and put a pin in it.

John

"Gunner" wrote in message
...

The big problem with BPs..is that the area directly under the gib is
dished for coolant. There is NO flatspot you can put anything like a
jack on and get a straight up push.

Perhaps you could disk grind a flat in the appropriate spot. Some bondo and
paint afterwards to clean it up.

Could be an issue with the jack going right through the casting under load.
Would make a hellova bang.

Sounds like a lot of work for a clapped out BPT.

Regards,

Robin

On Wed, 24 May 2006 11:05:40 -0400, "Robin S."
wrote:


"Gunner" wrote in message
.. .

The big problem with BPs..is that the area directly under the gib is
dished for coolant. There is NO flatspot you can put anything like a
jack on and get a straight up push.

Perhaps you could disk grind a flat in the appropriate spot. Some bondo and
paint afterwards to clean it up.

Ah...gonna take a mighty big flat spot.

Could be an issue with the jack going right through the casting under load.
Would make a hellova bang.

Sounds like a lot of work for a clapped out BPT.

Actually, it was rebuilt 3 yrs ago. Hardly crapped out.

Regards,

Robin



"The importance of morality is that people behave themselves even if
nobody's watching. There are not enough cops and laws to replace
personal morality as a means to produce a civilized society. Indeed,
the police and criminal justice system are the last desperate line of
defense for a civilized society. Unfortunately, too many of us see
police, laws and the criminal justice system as society's first line
of defense." --Walter Williams