A while ago someone was looking for a source of
hollow threaded rod.

One source suggested was recycling a presta valve
stem off a dead bike inner tube. (or a new one
if you don't ride on rough roads)

This item is about an inch long, with a ~4mm inner
diameter.

I was looking for a banana plug coupler today
and found these to serve. They'll even fit into
HV shrouded banana plug shells - which was the
particular application here.

The threading was not an issue, but could be used
for rt angle or PCB mounting. Material is easily
machined nickel-plated brass.

Save the tube material for patches or other uses
- spanner handle grips - rubber bands (cut on bias
for length. etc.

re threaded hollow rod - a more rugged part
can be had using a bike axle from a quick-
release assembly. These are tempered steel with
threading extending for most of their length
(~5inches or so).

Wouldn't have thought of axles if I hadn't broken
one (after 30+ years). Unbroken axles are more
easy to get ahold of, of course.

RL

On Wed, 26 Oct 2022 15:45:25 -0400, legg <legg@nospam.magma.ca> wrote:

>A while ago someone was looking for a source of
>hollow threaded rod.
>
>One source suggested was recycling a presta valve
>stem off a dead bike inner tube. (or a new one
>if you don't ride on rough roads)
>
>This item is about an inch long, with a ~4mm inner
>diameter.
>
>I was looking for a banana plug coupler today
>and found these to serve. They'll even fit into
>HV shrouded banana plug shells - which was the
>particular application here.
>
>The threading was not an issue, but could be used
>for rt angle or PCB mounting. Material is easily
>machined nickel-plated brass.
>
>Save the tube material for patches or other uses
>- spanner handle grips - rubber bands (cut on bias
>for length. etc.
>
>re threaded hollow rod - a more rugged part
>can be had using a bike axle from a quick-
>release assembly. These are tempered steel with
>threading extending for most of their length
>(~5inches or so).
>
>Wouldn't have thought of axles if I hadn't broken
>one (after 30+ years). Unbroken axles are more
>easy to get ahold of, of course.

McMaster-Carr:

..<https://www.mcmaster.com/threaded-rods/hollow-threaded-studs-4/>

Joe Gwinn

On 10/26/2022 12:45 PM, legg wrote:
> A while ago someone was looking for a source of
> hollow threaded rod.

Me.

> One source suggested was recycling a presta valve
> stem off a dead bike inner tube. (or a new one
> if you don't ride on rough roads)
>
> This item is about an inch long, with a ~4mm inner
> diameter.
>
> I was looking for a banana plug coupler today
> and found these to serve. They'll even fit into
> HV shrouded banana plug shells - which was the
> particular application here.
>
> The threading was not an issue, but could be used
> for rt angle or PCB mounting. Material is easily
> machined nickel-plated brass.
>
> Save the tube material for patches or other uses
> - spanner handle grips - rubber bands (cut on bias
> for length. etc.
>
> re threaded hollow rod - a more rugged part
> can be had using a bike axle from a quick-
> release assembly. These are tempered steel with
> threading extending for most of their length
> (~5inches or so).

I found some stainless parts and convinced a colleague to come
out of retirement to design some glass ones, for me (as I
have no desire to learn about the different types of glass
that are available and the processes for forming it to
particular shapes as well as ensuring it doesn't become
a liability hazard -- e.g., breaking during installation).

In my case, I needed reasonably small OD's with ID's that
are "as large as possible". I settled for 6 and 3mm,
respectively.

> Wouldn't have thought of axles if I hadn't broken
> one (after 30+ years). Unbroken axles are more
> easy to get ahold of, of course.

Unless you're trying to ORDER them in that state! :>

On 10/26/2022 12:45 PM, legg wrote:
> I was looking for a banana plug coupler today
> and found these to serve. They'll even fit into
> HV shrouded banana plug shells - which was the
> particular application here.

I've typically just "stacked" plugs that needed to be mated
(taking care not to leave the resulting "exposed plug"
free to contact anything undesirable)

[I store my unused plugs stacked, in this way, to cut down on
the space they consume in the parts drawers. Also makes it
easy to keep them sorted, by color.]

On Wed, 26 Oct 2022 15:45:25 -0400, legg <legg@nospam.magma.ca> wrote:

>A while ago someone was looking for a source of
>hollow threaded rod.
>
>One source suggested was recycling a presta valve
>stem off a dead bike inner tube. (or a new one
>if you don't ride on rough roads)
>
>This item is about an inch long, with a ~4mm inner
>diameter.
>
>I was looking for a banana plug coupler today
>and found these to serve. They'll even fit into
>HV shrouded banana plug shells - which was the
>particular application here.
>
>The threading was not an issue, but could be used
>for rt angle or PCB mounting. Material is easily
>machined nickel-plated brass.
>
>Save the tube material for patches or other uses
>- spanner handle grips - rubber bands (cut on bias
>for length. etc.
>
>re threaded hollow rod - a more rugged part
>can be had using a bike axle from a quick-
>release assembly. These are tempered steel with
>threading extending for most of their length
>(~5inches or so).
>
>Wouldn't have thought of axles if I hadn't broken
>one (after 30+ years). Unbroken axles are more
>easy to get ahold of, of course.
>
>RL

HH Smith 187?

Or the Amazon chinese equivalents.

On Wed, 26 Oct 2022 14:18:53 -0700, Don Y
<blockedofcourse@foo.invalid> wrote:

>On 10/26/2022 12:45 PM, legg wrote:
>> I was looking for a banana plug coupler today
>> and found these to serve. They'll even fit into
>> HV shrouded banana plug shells - which was the
>> particular application here.
>
>I've typically just "stacked" plugs that needed to be mated
>(taking care not to leave the resulting "exposed plug"
>free to contact anything undesirable)
>
>[I store my unused plugs stacked, in this way, to cut down on
>the space they consume in the parts drawers. Also makes it
>easy to keep them sorted, by color.]

I was trying to couple together probes and tips from different
sources, as well as making my own tips.

All those fancy attachments that come with one probe seldom
have same gender/mating regime.

RL

On Wed, 26 Oct 2022 17:05:11 -0700, John Larkin
<jlarkin@highland_atwork_technology.com> wrote:

>On Wed, 26 Oct 2022 15:45:25 -0400, legg <legg@nospam.magma.ca> wrote:
>
>>A while ago someone was looking for a source of
>>hollow threaded rod.
>>
>>One source suggested was recycling a presta valve
>>stem off a dead bike inner tube. (or a new one
>>if you don't ride on rough roads)
>>
>>This item is about an inch long, with a ~4mm inner
>>diameter.
>>
>>I was looking for a banana plug coupler today
>>and found these to serve. They'll even fit into
>>HV shrouded banana plug shells - which was the
>>particular application here.
>>
>>The threading was not an issue, but could be used
>>for rt angle or PCB mounting. Material is easily
>>machined nickel-plated brass.
>>
>>Save the tube material for patches or other uses
>>- spanner handle grips - rubber bands (cut on bias
>>for length. etc.
>>
>>re threaded hollow rod - a more rugged part
>>can be had using a bike axle from a quick-
>>release assembly. These are tempered steel with
>>threading extending for most of their length
>>(~5inches or so).
>>
>>Wouldn't have thought of axles if I hadn't broken
>>one (after 30+ years). Unbroken axles are more
>>easy to get ahold of, of course.
>>
>>RL
>
>HH Smith 187?
>
>Or the Amazon chinese equivalents.

All very nice, if you don't need it today, before 2pm.

RL

On 10/26/2022 5:15 PM, legg wrote:
> On Wed, 26 Oct 2022 14:18:53 -0700, Don Y
> <blockedofcourse@foo.invalid> wrote:
>
>> On 10/26/2022 12:45 PM, legg wrote:
>>> I was looking for a banana plug coupler today
>>> and found these to serve. They'll even fit into
>>> HV shrouded banana plug shells - which was the
>>> particular application here.
>>
>> I've typically just "stacked" plugs that needed to be mated
>> (taking care not to leave the resulting "exposed plug"
>> free to contact anything undesirable)
>>
>> [I store my unused plugs stacked, in this way, to cut down on
>> the space they consume in the parts drawers. Also makes it
>> easy to keep them sorted, by color.]
>
> I was trying to couple together probes and tips from different
> sources, as well as making my own tips.

Ah. Most of mine were purchased in the same lots -- same
make/model (different colors... look like candy!), single vs. dual.
I suspect there will still be dozens of "like new" ones sitting in
the parts drawer long after I'm dead (I way over-estimated how many
I would need in a lifetime!).

[OTOH, I always seem to be short on microprobes!]

> All those fancy attachments that come with one probe seldom
> have same gender/mating regime.

On Wed, 26 Oct 2022 18:25:35 -0700, Don Y
<blockedofcourse@foo.invalid> wrote:

>On 10/26/2022 5:15 PM, legg wrote:
>> On Wed, 26 Oct 2022 14:18:53 -0700, Don Y
>> <blockedofcourse@foo.invalid> wrote:
>>
>>> On 10/26/2022 12:45 PM, legg wrote:
>>>> I was looking for a banana plug coupler today
>>>> and found these to serve. They'll even fit into
>>>> HV shrouded banana plug shells - which was the
>>>> particular application here.
>>>
>>> I've typically just "stacked" plugs that needed to be mated
>>> (taking care not to leave the resulting "exposed plug"
>>> free to contact anything undesirable)
>>>
>>> [I store my unused plugs stacked, in this way, to cut down on
>>> the space they consume in the parts drawers. Also makes it
>>> easy to keep them sorted, by color.]
>>
>> I was trying to couple together probes and tips from different
>> sources, as well as making my own tips.
>
>Ah. Most of mine were purchased in the same lots -- same
>make/model (different colors... look like candy!), single vs. dual.
>I suspect there will still be dozens of "like new" ones sitting in
>the parts drawer long after I'm dead (I way over-estimated how many
>I would need in a lifetime!).
>
>[OTOH, I always seem to be short on microprobes!]

How did you guess? Fabbed 'tips' were banana posts leading
out to flexible wires and the female square posts that
microclips couple to. These were for a diff probe that
came with a bunch of attachments meant to clip
onto flying shrouded male bananas.

I expect the OEM hardware was configured that way just to
be ornery.

No problem attaching any kind of wire lead you might want
to a male banana plug.
>
>
>> All those fancy attachments that come with one probe seldom
>> have same gender/mating regime.
>

legg wrote:
> On Wed, 26 Oct 2022 18:25:35 -0700, Don Y
> <blockedofcourse@foo.invalid> wrote:
>
>> On 10/26/2022 5:15 PM, legg wrote:
>>> On Wed, 26 Oct 2022 14:18:53 -0700, Don Y
>>> <blockedofcourse@foo.invalid> wrote:
>>>
>>>> On 10/26/2022 12:45 PM, legg wrote:
>>>>> I was looking for a banana plug coupler today
>>>>> and found these to serve. They'll even fit into
>>>>> HV shrouded banana plug shells - which was the
>>>>> particular application here.
>>>>
>>>> I've typically just "stacked" plugs that needed to be mated
>>>> (taking care not to leave the resulting "exposed plug"
>>>> free to contact anything undesirable)
>>>>
>>>> [I store my unused plugs stacked, in this way, to cut down on
>>>> the space they consume in the parts drawers. Also makes it
>>>> easy to keep them sorted, by color.]
>>>
>>> I was trying to couple together probes and tips from different
>>> sources, as well as making my own tips.
>>
>> Ah. Most of mine were purchased in the same lots -- same
>> make/model (different colors... look like candy!), single vs. dual.
>> I suspect there will still be dozens of "like new" ones sitting in
>> the parts drawer long after I'm dead (I way over-estimated how many
>> I would need in a lifetime!).
>>
>> [OTOH, I always seem to be short on microprobes!]
>
> How did you guess? Fabbed 'tips' were banana posts leading
> out to flexible wires and the female square posts that
> microclips couple to. These were for a diff probe that
> came with a bunch of attachments meant to clip
> onto flying shrouded male bananas.

(Potentially great band name there.) ;)

Cheers

Phil Hobbs

On 10/27/2022 5:23 AM, legg wrote:
> On Wed, 26 Oct 2022 18:25:35 -0700, Don Y
> <blockedofcourse@foo.invalid> wrote:
>
>> On 10/26/2022 5:15 PM, legg wrote:
>>> On Wed, 26 Oct 2022 14:18:53 -0700, Don Y
>>> <blockedofcourse@foo.invalid> wrote:
>>>
>>>> On 10/26/2022 12:45 PM, legg wrote:
>>>>> I was looking for a banana plug coupler today
>>>>> and found these to serve. They'll even fit into
>>>>> HV shrouded banana plug shells - which was the
>>>>> particular application here.
>>>>
>>>> I've typically just "stacked" plugs that needed to be mated
>>>> (taking care not to leave the resulting "exposed plug"
>>>> free to contact anything undesirable)
>>>>
>>>> [I store my unused plugs stacked, in this way, to cut down on
>>>> the space they consume in the parts drawers. Also makes it
>>>> easy to keep them sorted, by color.]
>>>
>>> I was trying to couple together probes and tips from different
>>> sources, as well as making my own tips.
>>
>> Ah. Most of mine were purchased in the same lots -- same
>> make/model (different colors... look like candy!), single vs. dual.
>> I suspect there will still be dozens of "like new" ones sitting in
>> the parts drawer long after I'm dead (I way over-estimated how many
>> I would need in a lifetime!).
>>
>> [OTOH, I always seem to be short on microprobes!]
>
> How did you guess? Fabbed 'tips' were banana posts leading
> out to flexible wires and the female square posts that
> microclips couple to. These were for a diff probe that
> came with a bunch of attachments meant to clip
> onto flying shrouded male bananas.

When I come across 'scopes and logic analyzers, I just rescue
the probes and pass the kit on to the tip. THEY have value
(to me) but the kit would require a "proper assessment".

> I expect the OEM hardware was configured that way just to
> be ornery.
>
> No problem attaching any kind of wire lead you might want
> to a male banana plug.

On 27/10/22 06:45, legg wrote:
> A while ago someone was looking for a source of
> hollow threaded rod.
>
> One source suggested was recycling a presta valve
> stem off a dead bike inner tube. (or a new one
> if you don't ride on rough roads)
>
> This item is about an inch long, with a ~4mm inner
> diameter.
>
> I was looking for a banana plug coupler today
> and found these to serve. They'll even fit into
> HV shrouded banana plug shells - which was the
> particular application here.
>
> The threading was not an issue, but could be used
> for rt angle or PCB mounting. Material is easily
> machined nickel-plated brass.
>
> Save the tube material for patches or other uses
> - spanner handle grips - rubber bands (cut on bias
> for length. etc.
>
> re threaded hollow rod - a more rugged part
> can be had using a bike axle from a quick-
> release assembly. These are tempered steel with
> threading extending for most of their length
> (~5inches or so).
>
> Wouldn't have thought of axles if I hadn't broken
> one (after 30+ years). Unbroken axles are more
> easy to get ahold of, of course.

"Lamp rod" is a threaded tube, usually brass, to get power cables
through something and support a lamp fitting. At your electrician's
supplier.

Clifford Heath

On Friday, 28 October 2022 at 00:56:00 UTC+11, Phil Hobbs wrote:
> legg wrote:
> > On Wed, 26 Oct 2022 18:25:35 -0700, Don Y
> > <blocked...@foo.invalid> wrote:
> >
> >> On 10/26/2022 5:15 PM, legg wrote:
> >>> On Wed, 26 Oct 2022 14:18:53 -0700, Don Y
> >>> <blocked...@foo.invalid> wrote:
> >>>
> >>>> On 10/26/2022 12:45 PM, legg wrote:
> >>>>> I was looking for a banana plug coupler today
> >>>>> and found these to serve. They'll even fit into
> >>>>> HV shrouded banana plug shells - which was the
> >>>>> particular application here.
> >>>>
> >>>> I've typically just "stacked" plugs that needed to be mated
> >>>> (taking care not to leave the resulting "exposed plug"
> >>>> free to contact anything undesirable)
> >>>>
> >>>> [I store my unused plugs stacked, in this way, to cut down on
> >>>> the space they consume in the parts drawers. Also makes it
> >>>> easy to keep them sorted, by color.]
> >>>
> >>> I was trying to couple together probes and tips from different
> >>> sources, as well as making my own tips.
> >>
> >> Ah. Most of mine were purchased in the same lots -- same
> >> make/model (different colors... look like candy!), single vs. dual.
> >> I suspect there will still be dozens of "like new" ones sitting in
> >> the parts drawer long after I'm dead (I way over-estimated how many
> >> I would need in a lifetime!).
> >>
> >> [OTOH, I always seem to be short on microprobes!]
> >
> > How did you guess? Fabbed 'tips' were banana posts leading
> > out to flexible wires and the female square posts that
> > microclips couple to. These were for a diff probe that
> > came with a bunch of attachments meant to clip
> > onto flying shrouded male bananas.
> (Potentially great band name there.) ;)
>
> Cheers
>
> Phil Hobbs

Several ! :-))...

"Fabbed Tips'
"The (Female) Square Posts"
"Flying Shrouded Male Bananas"
--
Cheers,
Chris.