Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)
--
Graeme

In article ,
says...
It would need to be fairly large, to inject Vaseline.

Warmed up, Vaseline is quite runny.

--
Skipweasel - never knowingly understood.

Graeme ) wibbled on Sunday 06 March 2011 20:29:


Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

Here you go (down the bottom of the page):

http://www.medisave.co.uk/needles-am...ges-c-137.html

You can buy them thre too...

--
Tim Watts

Tim Watts ) wibbled on Sunday 06 March 2011 20:52:

Graeme ) wibbled on Sunday 06 March 2011 20:29:


Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

Here you go (down the bottom of the page):

http://www.medisave.co.uk/needles-am...ges-c-137.html

You can buy them thre too...


Looking at that, 10 guage is 3.4mm OD - bloody hell, where do they stick
that? Ow...

Graphic descripions from people who've had odd diseases NOT required! ;-

--
Tim Watts

Graeme wrote:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me,

That, to me, means a 25AWG needle that is 1 inch long. There's not much
difference between SWG and AWG at that size (SWG = 0.020in dia,
AWG=0.018in dia). Getting Vaseline through a needle that fine is going
to be hmm, "fun". FWIW, I practiced in my youth injecting vaccines
emulsified in peanut oil. That mixture has about the consistency of
Vaseline and it's just possible to inject it intradermally using a 25AWG
orange needle.

and I'm not even sure that 25 gauge in the UK is the same as 25 gauge in
the US. A quick Google suggests that UK orange needles are 25 gauge, but
is that the same as the US size?

I think so for needles, they are quoted in the same size both sides of
the pond and the sizes are AWG.

It would need to be fairly large, to inject Vaseline.

Well, yes, it would be easier with a large needle. However depending on
where and what you are injecting it into a large needle may be
impossible to use. If you want an easier job I would use a 16AWG (cream)
needle, provided that you can get away with using one that large. Also
if the application doesn't need a sterile sharp I would consider cutting
off the point. For cream needles this is easy to do with a Swan Morton
scalpel or (presumably) a box cutter. Lay the needle on a block of wood
with the hub hanging over the edge of the block. Place the blade a few
mm behind the sharp tip and roll the needle backwards and forward by
moving the blade in a sawing action so that you get a groove all around
the needle. Then grasp the tip with a pair of pliers and bend it
sharply. The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun.

Selecting a syringe size and make is critical. I found that the clear
(not polypropylene) syringes worked best under sustained pressure.
Obviously you need to use the narrowest syringe possible for the job. I
used to use 10ml syringes and I have used up to a 30ml syringe. Larger
than that and the area of the plunger is too great. You will also find
that if you squeeze too hard that the contents of the syringe will blow
back around the rubber bung in the barrel.

Don't use insulin syringes. They're useless for this sort of job.

No, this is not to inject Vaseline into a body :-)

I'm intrigued.

On Mar 6, 9:05 pm, (Steve Firth) wrote:

snip in depth syringe stuff

Don't use insulin syringes. They're useless for this sort of job.

No, this is not to inject Vaseline into a body :-)

I'm intrigued.

could well be connected to the Lidl USB arse-Endoscope in another
current thread.......
;)
Jim K

On 06/03/2011 20:54, Tim Watts wrote:
Tim Watts ) wibbled on Sunday 06 March 2011 20:52:

Graeme ) wibbled on Sunday 06 March 2011 20:29:


Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

Here you go (down the bottom of the page):

http://www.medisave.co.uk/needles-am...ges-c-137.html

You can buy them thre too...


Looking at that, 10 guage is 3.4mm OD - bloody hell, where do they stick
that? Ow...

Normally they are for large animal veterinary use. However, skeletal
muscle biopsy needles, used in sports training, come in sizes 4-6mm,
while minimally invasive surgery trocars can be 10mm bore.

Colin Bignell

On 06/03/2011 21:05, Steve Firth wrote:
....
Well, yes, it would be easier with a large needle. However depending on
where and what you are injecting it into a large needle may be
impossible to use. If you want an easier job I would use a 16AWG (cream)
needle, provided that you can get away with using one that large. Also
if the application doesn't need a sterile sharp I would consider cutting
off the point. For cream needles this is easy to do with a Swan Morton
scalpel or (presumably) a box cutter. Lay the needle on a block of wood
with the hub hanging over the edge of the block. Place the blade a few
mm behind the sharp tip and roll the needle backwards and forward by
moving the blade in a sawing action so that you get a groove all around
the needle. Then grasp the tip with a pair of pliers and bend it
sharply. The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun....

It would be an awful lot easier to buy a blunt cannula to begin with.

Colin Bignell

On 06/03/2011 20:29, Graeme wrote:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

It is going to be very difficult to push something with the consistency
of vaseline down a 25g needle. If you do have to use something that
fine, make it as short as possible. Also, make sure both syringe and
needle have Luer lock fitting. That holds the needle onto the syringe
under pressure. You can buy syringes with simple Luer (aka Luer slip)
fittings, but they are for drawing fluids up, not injecting.

Colin Bignell

"Steve Firth" wrote in message
.. .
Graeme wrote:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me,

That, to me, means a 25AWG needle that is 1 inch long. There's not much
difference between SWG and AWG at that size (SWG = 0.020in dia,
AWG=0.018in dia). Getting Vaseline through a needle that fine is going
to be hmm, "fun". FWIW, I practiced in my youth injecting vaccines
emulsified in peanut oil. That mixture has about the consistency of
Vaseline and it's just possible to inject it intradermally using a 25AWG
orange needle.

and I'm not even sure that 25 gauge in the UK is the same as 25 gauge in
the US. A quick Google suggests that UK orange needles are 25 gauge, but
is that the same as the US size?

I think so for needles, they are quoted in the same size both sides of
the pond and the sizes are AWG.

It would need to be fairly large, to inject Vaseline.

Well, yes, it would be easier with a large needle. However depending on
where and what you are injecting it into a large needle may be
impossible to use. If you want an easier job I would use a 16AWG (cream)
needle, provided that you can get away with using one that large. Also
if the application doesn't need a sterile sharp I would consider cutting
off the point. For cream needles this is easy to do with a Swan Morton
scalpel or (presumably) a box cutter. Lay the needle on a block of wood
with the hub hanging over the edge of the block. Place the blade a few
mm behind the sharp tip and roll the needle backwards and forward by
moving the blade in a sawing action so that you get a groove all around
the needle. Then grasp the tip with a pair of pliers and bend it
sharply. The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun.

Selecting a syringe size and make is critical. I found that the clear
(not polypropylene) syringes worked best under sustained pressure.
Obviously you need to use the narrowest syringe possible for the job. I
used to use 10ml syringes and I have used up to a 30ml syringe. Larger
than that and the area of the plunger is too great. You will also find
that if you squeeze too hard that the contents of the syringe will blow
back around the rubber bung in the barrel.

Don't use insulin syringes. They're useless for this sort of job.

No, this is not to inject Vaseline into a body :-)

I'm intrigued.

You always were.

"Nightjar \"cpb\"@" "insertmysurnamehere wrote:

The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun....

It would be an awful lot easier to buy a blunt cannula to begin with.

Well not really if one already has the needle but does not have a
cannula and it's cheaper to use a needle. It's also how we used to do it
before people got soft and had to have everything handed to them on a
plate.

In article ,
Graeme writes:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

Used to play with syringes as a boy. No, not drugs. A school
friend's father was a doctor, and we used to get some from him to
use as water pistols. They would work for an hour or two, and then
the rubber plunger would get too stiff. I tried vaseline to
lubricate it, but then the rubber instantly went to a sticky goo.
An early lesson that oil based lubricants rot rubber.

Of course, they may be made from something else nowadays.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On 07/03/2011 00:04, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun....

It would be an awful lot easier to buy a blunt cannula to begin with.

Well not really if one already has the needle but does not have a
cannula and it's cheaper to use a needle.

Filling cannulae should be no dearer than needles and have the advantage
that the end is properly deburred.

It's also how we used to do it
before people got soft and had to have everything handed to them on a
plate.

You would need to be in the Guiness book of records to be old enough to
predate the use of filling cannulae.

Colin Bignell

Steve Firth wrote:
wrote:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me,

That, to me, means a 25AWG needle that is 1 inch long. There's not much
difference between SWG and AWG at that size (SWG = 0.020in dia,
AWG=0.018in dia). Getting Vaseline through a needle that fine is going
to be hmm, "fun". FWIW, I practiced in my youth injecting vaccines
emulsified in peanut oil. That mixture has about the consistency of
Vaseline and it's just possible to inject it intradermally using a 25AWG
orange needle.

and I'm not even sure that 25 gauge in the UK is the same as 25 gauge in
the US. A quick Google suggests that UK orange needles are 25 gauge, but
is that the same as the US size?

I think so for needles, they are quoted in the same size both sides of
the pond and the sizes are AWG.

It would need to be fairly large, to inject Vaseline.

Well, yes, it would be easier with a large needle. However depending on
where and what you are injecting it into a large needle may be
impossible to use. If you want an easier job I would use a 16AWG (cream)
needle, provided that you can get away with using one that large. Also
if the application doesn't need a sterile sharp I would consider cutting
off the point. For cream needles this is easy to do with a Swan Morton
scalpel or (presumably) a box cutter. Lay the needle on a block of wood
with the hub hanging over the edge of the block. Place the blade a few
mm behind the sharp tip and roll the needle backwards and forward by
moving the blade in a sawing action so that you get a groove all around
the needle. Then grasp the tip with a pair of pliers and bend it
sharply. The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun.

Selecting a syringe size and make is critical. I found that the clear
(not polypropylene) syringes worked best under sustained pressure.
Obviously you need to use the narrowest syringe possible for the job. I
used to use 10ml syringes and I have used up to a 30ml syringe. Larger
than that and the area of the plunger is too great. You will also find
that if you squeeze too hard that the contents of the syringe will blow
back around the rubber bung in the barrel.

Don't use insulin syringes. They're useless for this sort of job.

No, this is not to inject Vaseline into a body :-)

I'm intrigued.


It must be a secret and he is not going to tell us.

"Nightjar \"cpb\"@" "insertmysurnamehere wrote:

On 07/03/2011 00:04, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun....

It would be an awful lot easier to buy a blunt cannula to begin with.

Well not really if one already has the needle but does not have a
cannula and it's cheaper to use a needle.

Filling cannulae should be no dearer than needles and have the advantage
that the end is properly deburred.

Please feel free to provide some on-line suppliers and prices. And if
done as I describe, the ends don't need deburring.

It's also how we used to do it
before people got soft and had to have everything handed to them on a
plate.

You would need to be in the Guiness book of records to be old enough to
predate the use of filling cannulae.

All the yers I worked in the business and not one time to I recall
having any "filing cannulae" in the store cupboard. Plenty of syringes
and needles though. Several fleixible canulae as well, but not that
useful for this purpose and more expensive than needles.

On 07/03/2011 08:12, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

On 07/03/2011 00:04, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun....

It would be an awful lot easier to buy a blunt cannula to begin with.

Well not really if one already has the needle but does not have a
cannula and it's cheaper to use a needle.

Filling cannulae should be no dearer than needles and have the advantage
that the end is properly deburred.

Please feel free to provide some on-line suppliers and prices.

As I made the things, I never needed to buy them. However, had I wanted
to, I would probably have phoned a chap I knew at Rocket Medical, which
is where I used to get syringes. Unfortunately, the link to their online
needle and syringe catalogue download appears not to be working.

http://www.rocketmedical.com/Rocket_...nstruments.htm

I sold my needle making business to these people and have no doubt they
could supply reusable filling cannula, which would probably suit the
OP's purpose better than disposable needles.

http://www.dixons-uk.com/

And if
done as I describe, the ends don't need deburring.

My experience is that the sharp edge produced if the tip broke off was a
potential hazard on needles notched to make them more visible to
ultrasound and we had to develop an alternative reflection system to
avoid that.


It's also how we used to do it
before people got soft and had to have everything handed to them on a
plate.

You would need to be in the Guiness book of records to be old enough to
predate the use of filling cannulae.

All the yers I worked in the business and not one time to I recall
having any "filing cannulae" in the store cupboard.

My father used to make them when he was an apprentice and they were not
a new product then.

Plenty of syringes
and needles though. Several fleixible canulae as well, but not that
useful for this purpose and more expensive than needles.

What was in your store cupboard would depend upon what was ordered and,
if you didn't requisition any, you wouldn't have had them.

A filling, blunt or drawing up cannula is simply a needle with a square
cut end. As the name suggests, their purpose is to fill a syringe before
fitting the hypodermic needle, to avoid possible contamination of the
needle point.

Colin Bignell

On 07/03/2011 01:17, Andrew Gabriel wrote:
In ,
writes:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

Used to play with syringes as a boy. No, not drugs. A school
friend's father was a doctor, and we used to get some from him to
use as water pistols. They would work for an hour or two, and then
the rubber plunger would get too stiff. I tried vaseline to
lubricate it, but then the rubber instantly went to a sticky goo.
An early lesson that oil based lubricants rot rubber.

Of course, they may be made from something else nowadays.

I suspect they are, as I used to use them for pushing solvents through
fine needles, to clean the bore, and some of the things we used would
have been very detrimental to rubber products.

I don't know whether they are still made, but the syringes I used to use
for oiling models, about 50 years ago, were glass with ceramic plungers,
which were resistant to just about anything, except applying too much
pressure with too fine a needle fitted, which can result in a cracked glass.

Colin Bignell

On 07/03/2011 01:17, Andrew Gabriel wrote:

Used to play with syringes as a boy. No, not drugs. A school
friend's father was a doctor, and we used to get some from him to
use as water pistols.

Same here.

Back in the 70s they were handed out like sweets, at the doctors surgery
to pacify us kids. Maybe to get moi used to the idea of injections
etc... Don't know what they were thinking of....

--
Adrian C

"Nightjar \"cpb\"@" "insertmysurnamehere wrote:
On 07/03/2011 08:12, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

On 07/03/2011 00:04, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun....

It would be an awful lot easier to buy a blunt cannula to begin with.

Well not really if one already has the needle but does not have a
cannula and it's cheaper to use a needle.

Filling cannulae should be no dearer than needles and have the advantage
that the end is properly deburred.

Please feel free to provide some on-line suppliers and prices.

As I made the things, I never needed to buy them. However, had I wanted
to, I would probably have phoned a chap I knew at Rocket Medical, which
is where I used to get syringes. Unfortunately, the link to their online
needle and syringe catalogue download appears not to be working.

http://www.rocketmedical.com/Rocket_...nstruments.htm

I sold my needle making business to these people and have no doubt they
could supply reusable filling cannula, which would probably suit the OP's
purpose better than disposable needles.

http://www.dixons-uk.com/

Yes terribly interesting and all that. But why would the OP want to pay
someone to make a cannula for what sounds like a one off or limited number
of uses project.

And if
done as I describe, the ends don't need deburring.

My experience is that the sharp edge produced if the tip broke off was a
potential hazard on needles notched to make them more visible to
ultrasound and we had to develop an alternative reflection system to avoid that.

Heck and you think the OP is intending to image the needle using
ultrasound?

It's also how we used to do it
before people got soft and had to have everything handed to them on a
plate.

You would need to be in the Guiness book of records to be old enough to
predate the use of filling cannulae.

All the yers I worked in the business and not one time to I recall
having any "filing cannulae" in the store cupboard.

My father used to make them when he was an apprentice and they were not a new product then.

How terribly nice for your father. I used to have gavage needles made for
me by the Chaps in the bowels of the medical school. Oddly they always
started with a sharp. I guess they didn't work to your father's admittedly
high standards.

Plenty of syringes
and needles though. Several fleixible canulae as well, but not that
useful for this purpose and more expensive than needles.

What was in your store cupboard would depend upon what was ordered and,
if you didn't requisition any, you wouldn't have had them.

We had a technician to do that sort of thing.

A filling, blunt or drawing up cannula is simply a needle with a square
cut end. As the name suggests, their purpose is to fill a syringe before
fitting the hypodermic needle, to avoid possible contamination of the needle point.

Your grandmother just called. She said she needs another lesson on the
application of partial vacuum to avian ova.

Steve Firth wrote:

Your grandmother just called. She said she needs another lesson on the
application of partial vacuum to avian ova.

I understand the trick is to apply *negative* partial vacuum.

Graeme wrote:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

UK AWG is a couple of gauges apart from SWG, if that's what gauge means.

Google for tables of what corresponds to what.

In message , "Nightjar
\"cpb\"@" writes

I don't know whether they are still made, but the syringes I used to
use for oiling models, about 50 years ago, were glass with ceramic
plungers, which were resistant to just about anything, except applying
too much pressure with too fine a needle fitted, which can result in a
cracked glass.

Bingo :-) Yes, lubricating models. A friend in the US swears by
Vaseline to lubricate electric motors in old 0 gauge toy trains. Much
better than oil, he says, although there are as many recommendations as
there are people running these things.

Anyway, I thought I would try Vaseline, assuming I can find a suitable
syringe and needle. Thanks to all the contributors here, I now know
more about the subject than I would have thought possible. Thank you,
all.

Just out of interest, and to put the discussion in context, this is what
my friend said about lubricating a 20v Marx motor :

You can make the screech go away if you use a hypodermic syringe,
preferably with a 25 gauge needle (like a "B-D 3ml 25G1" from CVS), and
put a bit of Vaseline Petroleum Jelly under the gear on the end of the
armature shaft opposite the brushes so it gets into the bearing that is
hidden under the gear. I do not like oil for Marx trains. As I have
written before, oil gets thrown into the reverse unit, drips onto the
commutator, runs down onto the track, gets gummy when it gets old, eats
up the bonds in the powdered metal gears and does not lubricate very
well for very long. Vaseline was recommended by Marx, and is still the
best lubricant for Marx trains. If you can't get a hypodermic syringe,
put a glob of Vaseline against that gear, and push it down under the
gear with a torn-off cardboard tab from a cereal box.
--
Graeme

On Mon, 07 Mar 2011 12:39:08 +0000, Graeme wrote:
oil gets thrown into the reverse unit, drips onto the
commutator, runs down onto the track

The 10:20 to Didcot is running late due to the wrong sort of oil on the
line...

On 07/03/2011 10:42, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:
On 07/03/2011 08:12, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

On 07/03/2011 00:04, Steve Firth wrote:
"Nightjar\"cpb\"@""insertmysurnamehere wrote:

The tip should break off cleanly. The needle should now be a
lot safer to use if you are using a syringe as a baby grease gun....

It would be an awful lot easier to buy a blunt cannula to begin with.

Well not really if one already has the needle but does not have a
cannula and it's cheaper to use a needle.

Filling cannulae should be no dearer than needles and have the advantage
that the end is properly deburred.

Please feel free to provide some on-line suppliers and prices.

As I made the things, I never needed to buy them. However, had I wanted
to, I would probably have phoned a chap I knew at Rocket Medical, which
is where I used to get syringes. Unfortunately, the link to their online
needle and syringe catalogue download appears not to be working.

http://www.rocketmedical.com/Rocket_...nstruments.htm

I sold my needle making business to these people and have no doubt they
could supply reusable filling cannula, which would probably suit the OP's
purpose better than disposable needles.

http://www.dixons-uk.com/

Yes terribly interesting and all that. But why would the OP want to pay
someone to make a cannula for what sounds like a one off or limited number
of uses project.

I said supply, not make. Unless they have changed the product range
since they bought the business, blunt cannulae are a standard item. As I
said originally, it would be a lot less hassle to buy a ready made
product than to modify a needle.

And if
done as I describe, the ends don't need deburring.

My experience is that the sharp edge produced if the tip broke off was a
potential hazard on needles notched to make them more visible to
ultrasound and we had to develop an alternative reflection system to avoid that.

Heck and you think the OP is intending to image the needle using
ultrasound?

Are you being deliberately obtuse? I was pointing out my experiences of
what happens when you score and snap needle tube. The only application I
can think of where anyone deliberately scored needle tube was for
ultrasound marking.

It's also how we used to do it
before people got soft and had to have everything handed to them on a
plate.

You would need to be in the Guiness book of records to be old enough to
predate the use of filling cannulae.

All the yers I worked in the business and not one time to I recall
having any "filing cannulae" in the store cupboard.

My father used to make them when he was an apprentice and they were not a new product then.

How terribly nice for your father. I used to have gavage needles made for
me by the Chaps in the bowels of the medical school. Oddly they always
started with a sharp. I guess they didn't work to your father's admittedly
high standards.

I would think it more likely that they didn't have the materials to make
from scratch.

Plenty of syringes
and needles though. Several fleixible canulae as well, but not that
useful for this purpose and more expensive than needles.

What was in your store cupboard would depend upon what was ordered and,
if you didn't requisition any, you wouldn't have had them.

We had a technician to do that sort of thing.

Same difference.

A filling, blunt or drawing up cannula is simply a needle with a square
cut end. As the name suggests, their purpose is to fill a syringe before
fitting the hypodermic needle, to avoid possible contamination of the needle point.

Your grandmother just called. She said she needs another lesson on the
application of partial vacuum to avian ova.

So, you have heard of them, despite claiming never to have seen one?

Colin Bignell

On 07/03/2011 12:39, Graeme wrote:
In message , "Nightjar
\"cpb\"@" writes

I don't know whether they are still made, but the syringes I used to
use for oiling models, about 50 years ago, were glass with ceramic
plungers, which were resistant to just about anything, except applying
too much pressure with too fine a needle fitted, which can result in a
cracked glass.

Bingo :-) Yes, lubricating models. A friend in the US swears by Vaseline
to lubricate electric motors in old 0 gauge toy trains. Much better than
oil, he says, although there are as many recommendations as there are
people running these things.

Anyway, I thought I would try Vaseline, assuming I can find a suitable
syringe and needle. Thanks to all the contributors here, I now know more
about the subject than I would have thought possible. Thank you, all.

Just out of interest, and to put the discussion in context, this is what
my friend said about lubricating a 20v Marx motor :

You can make the screech go away if you use a hypodermic syringe,
preferably with a 25 gauge needle (like a "B-D 3ml 25G1" from CVS), and
put a bit of Vaseline Petroleum Jelly under the gear on the end of the
armature shaft opposite the brushes so it gets into the bearing that is
hidden under the gear. I do not like oil for Marx trains. As I have
written before, oil gets thrown into the reverse unit, drips onto the
commutator, runs down onto the track, gets gummy when it gets old, eats
up the bonds in the powdered metal gears and does not lubricate very
well for very long. Vaseline was recommended by Marx, and is still the
best lubricant for Marx trains. If you can't get a hypodermic syringe,
put a glob of Vaseline against that gear, and push it down under the
gear with a torn-off cardboard tab from a cereal box.

Unless you really need the small size to get into the space, I would
suggest something larger than 25 AWG, which is about 26 SWG. That is
very small to push Vaseline down. Were I doing it, I would look at using
a haemorrhoidal needle. The main shaft is relatively large - 15g or 16g
- with a short tip that is 19g or 20g. That makes it much easier to push
a thick fluid down the needle.

I also wonder whether Vaseline is still the best product, even if the
manufacturer recommended it when the locomotive was new. Tribology has
come a long way in the past 40 years.

Colin Bignell

"Nightjar \"cpb\"@" "insertmysurnamehere wrote:

[snip]

A filling, blunt or drawing up cannula is simply a needle with a square
cut end. As the name suggests, their purpose is to fill a syringe before
fitting the hypodermic needle, to avoid possible contamination of the needle point.

Your grandmother just called. She said she needs another lesson on the
application of partial vacuum to avian ova.

So, you have heard of them, despite claiming never to have seen one?

Perhaps you can reference the post where I made the claim that you allege
above?

Here's a clue - just because you can make it doesn't mean that it is in any
way useful in the real world. And where one does need such a thing they are
trivial to knock up oneself. Like glass knives and Pasteur pipettes.

In article ,
says...
Used to play with syringes as a boy. No, not drugs. A school
friend's father was a doctor, and we used to get some from him to
use as water pistols. They would work for an hour or two, and then
the rubber plunger would get too stiff. I tried vaseline to
lubricate it, but then the rubber instantly went to a sticky goo.
An early lesson that oil based lubricants rot rubber.



We use syringes at school for Y3's DT bit called Moving Monsters - two
syringes connected by a pipe; push one in, the other pops out, make
model from junk and animate it.

Splendid fun - but sometimes stiction stops it working as well as it
should - a little squire of silicone spray soon fixes it.

--
Skipweasel - never knowingly understood.

On 07/03/2011 15:38, Steve Firth wrote:
....
Here's a clue - just because you can make it doesn't mean that it is in any
way useful in the real world.

The NHS seem to disagree with you - they bought enough of them.

And where one does need such a thing they are
trivial to knock up oneself. Like glass knives and Pasteur pipettes.

Which in no way negates my original point that, if that is what the OP
needs, it would be a lot simpler to buy a blunt cannula in the first
place than to buy a needle and modify it.

Colin Bignell

"Nightjar \"cpb\"@" "insertmysurnamehere wrote:

On 07/03/2011 15:38, Steve Firth wrote:
...
Here's a clue - just because you can make it doesn't mean that it is in any
way useful in the real world.

The NHS seem to disagree with you - they bought enough of them.

They also buy bizarre surgical instruments that, when one analyses the
purchase, seems to be entirely because the resident consultant designed
the awful thing. Often one opens a cupboard to have dozens of bespoke,
entirely useless instruments fall on one's head.

And where one does need such a thing they are trivial to knock up
oneself. Like glass knives and Pasteur pipettes.

Which in no way negates my original point that, if that is what the OP
needs, it would be a lot simpler to buy a blunt cannula in the first
place than to buy a needle and modify it.

It depends what he has to hand, doesn't it? If he already has a needle
why should be buy a cannula. Indeed why are you busy collecting
molehills and carrying a plan marked "Dolomites"?

On 06/03/2011 20:29, Graeme wrote:

Received advice from a US based friend, who talks about injecting
Vaseline, using a hypodermic syringe, preferably with a 25 gauge needle
(like a B-D 3ml 25G1 from CVS). That means nothing to me, and I'm not
even sure that 25 gauge in the UK is the same as 25 gauge in the US. A
quick Google suggests that UK orange needles are 25 gauge, but is that
the same as the US size? It would need to be fairly large, to inject
Vaseline.

No, this is not to inject Vaseline into a body :-)

No idea about what size they correspond to, but inkjet refill kits come
with syringes with (blunted) needles.

inner bore about 1mm if that helps

John Rumm wrote:

On 07/03/2011 16:57, Owain wrote:
On Mar 7, 1:56 pm, "Nightjar\"cpb\"@" wrote:
... Were I doing it, I would look at using
a haemorrhoidal needle.

Ewwwww.

There are I suspect some questions better not asked! ;-)

Yes, I should sit on that one!

Chris
--
Chris J Dixon Nottingham UK


Have dancing shoes, will ceilidh.

On 08/03/2011 03:55, John Rumm wrote:
On 07/03/2011 16:57, Owain wrote:
On Mar 7, 1:56 pm, "Nightjar\"cpb\"@" wrote:
... Were I doing it, I would look at using
a haemorrhoidal needle.

Ewwwww.

There are I suspect some questions better not asked! ;-)

More than one cold caller beat a hasty retreat when they did ask what we
made and one even had to be given a chair and hot sweet tea.

Colin Bignell

Chris J Dixon ) wibbled on Tuesday 08 March 2011 07:00:

John Rumm wrote:

On 07/03/2011 16:57, Owain wrote:
On Mar 7, 1:56 pm, "Nightjar\"cpb\"@" wrote:
... Were I doing it, I would look at using
a haemorrhoidal needle.

Ewwwww.

There are I suspect some questions better not asked! ;-)

Yes, I should sit on that one!

Chris

I think you got the point!

--
Tim Watts

On 07/03/2011 13:56, Nightjar "cpb"@ insertmysurnamehere wrote:
On 07/03/2011 12:39, Graeme wrote:
In message , "Nightjar
\"cpb\"@" writes

I don't know whether they are still made, but the syringes I used to
use for oiling models, about 50 years ago, were glass with ceramic
plungers, which were resistant to just about anything, except applying
too much pressure with too fine a needle fitted, which can result in a
cracked glass.

Bingo :-) Yes, lubricating models. A friend in the US swears by Vaseline
to lubricate electric motors in old 0 gauge toy trains. Much better than
oil, he says, although there are as many recommendations as there are
people running these things.

Anyway, I thought I would try Vaseline, assuming I can find a suitable
syringe and needle. Thanks to all the contributors here, I now know more
about the subject than I would have thought possible. Thank you, all.

Just out of interest, and to put the discussion in context, this is what
my friend said about lubricating a 20v Marx motor :

You can make the screech go away if you use a hypodermic syringe,
preferably with a 25 gauge needle (like a "B-D 3ml 25G1" from CVS), and
put a bit of Vaseline Petroleum Jelly under the gear on the end of the
armature shaft opposite the brushes so it gets into the bearing that is
hidden under the gear. I do not like oil for Marx trains. As I have
written before, oil gets thrown into the reverse unit, drips onto the
commutator, runs down onto the track, gets gummy when it gets old, eats
up the bonds in the powdered metal gears and does not lubricate very
well for very long. Vaseline was recommended by Marx, and is still the
best lubricant for Marx trains. If you can't get a hypodermic syringe,
put a glob of Vaseline against that gear, and push it down under the
gear with a torn-off cardboard tab from a cereal box.

Unless you really need the small size to get into the space, I would
suggest something larger than 25 AWG, which is about 26 SWG. That is
very small to push Vaseline down. Were I doing it, I would look at using
a haemorrhoidal needle. The main shaft is relatively large - 15g or 16g
- with a short tip that is 19g or 20g. That makes it much easier to push
a thick fluid down the needle.


Wouldn't you be better off warming the vaseline and sucking up a few
mm^3 into the tip end of the needle rather than filling the cylinder and
trying to push the vaseline down the full length of the it?

In message , Jules Richardson
writes
On Mon, 07 Mar 2011 12:39:08 +0000, Graeme wrote:
oil gets thrown into the reverse unit, drips onto the
commutator, runs down onto the track

The 10:20 to Didcot is running late due to the wrong sort of oil on the
line...

More accurate than you realise :-)
--
Graeme

In message , "Nightjar
\"cpb\"@" writes

Unless you really need the small size to get into the space, I would
suggest something larger than 25 AWG, which is about 26 SWG. That is
very small to push Vaseline down. Were I doing it, I would look at
using a haemorrhoidal needle. The main shaft is relatively large - 15g
or 16g - with a short tip that is 19g or 20g. That makes it much easier
to push a thick fluid down the needle.

OK, noted, thank you.

I also wonder whether Vaseline is still the best product, even if the
manufacturer recommended it when the locomotive was new. Tribology has
come a long way in the past 40 years.

Suggestions welcome :-)

Vaseline was recommended before the war, and this is a subject that
rears up on a regular basis, with more recommendations than anyone
needs, from good old 3-in-one to thick motor oil, clipper oil, sewing
machine oil, specialist lubricants, Vaseline and a whole lot more. The
only universally agreed no-no is WD-40.

To be honest, I'm not sure that the actual lubricant makes a great deal
of difference for normal day to day use. These are motors designed in
the 30s, solid, well made, and I don't doubt that, with care, most will
be running long after I've hit the buffers for the last time.
--
Graeme