I'm trying to rejuvenate an old pair of rimless glasses, which are an
unusual design, and were customised by the optician who supplied them,
who was a very accommodating bloke.

The nose piece is fitted to the lenses by a threaded 1.3mm pin and a
thick wire which go through a drilled 1.5mm hole and a dremelled slot respectively.

<http://andyburns.uk/misc/glasses1.jpg>

The arms 'wedge' over the thick wires and tiny nuts hold them onto the
threaded pin (the arms connect to the nose-side of the lenses instead of
the ears-side, which is the unusual feature that I like about them).

The wires must have been bent around the slot after the pins inserted
through the holes, so I had to slightly bend them to take the nose piece
apart, that's why they look slightly mangled, but I can put that right
when re-assembling them.

<http://andyburns.uk/misc/glasses2.jpg>

I seem to remember he called it a grommet which held the pin in the
hole, years of nose-grease has rotted these grommets/pins/tubes away, I
can see various grommets etc on optician suppliers, but most are for
"normal" rimless frames, e.g. these double pins

<https://blog.sbf5.com/2019/07/assembling-frames-on-rimless-glasses>

I think what I need is like a bushing 1.5mm od, 1.3mm id maybe 2-3mmm
long, clear plastic ... any suggestions?

Preferably without having to buy hundreds of the things from the USA.

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On 25/07/2025 11:51, Andy Burns wrote:

I'm trying to rejuvenate an old pair of rimless glasses, which are an
unusual design, and were customised by the optician who supplied them,
who was a very accommodating bloke.

The nose piece is fitted to the lenses by a threaded 1.3mm pin and a
thick wire which go through a drilled 1.5mm hole and a dremelled slot respectively.

<http://andyburns.uk/misc/glasses1.jpg>

The arms 'wedge' over the thick wires and tiny nuts hold them onto the threaded pin (the arms connect to the nose-side of the lenses instead of
the ears-side, which is the unusual feature that I like about them).

The wires must have been bent around the slot after the pins inserted
through the holes, so I had to slightly bend them to take the nose piece apart, that's why they look slightly mangled, but I can put that right
when re-assembling them.

<http://andyburns.uk/misc/glasses2.jpg>

I seem to remember he called it a grommet which held the pin in the
hole, years of nose-grease has rotted these grommets/pins/tubes away, I
can see various grommets etc on optician suppliers, but most are for
"normal" rimless frames, e.g. these double pins

<https://blog.sbf5.com/2019/07/assembling-frames-on-rimless-glasses>

I think what I need is like a bushing 1.5mm od, 1.3mm id maybe 2-3mmm
long, clear plastic ... any suggestions?

I would say that you *might* get away with some PTFE tubing

But that;s a fearfully thin wall thickness for clear plastic

You might get that in metal tubing.

Preferably without having to buy hundreds of the things from the USA.

China, more likely

!%$**£! Aha, Would clear heat shrink tubing do the job?

https://www.ebay.co.uk/itm/185013811616

--
Future generations will wonder in bemused amazement that the early
twenty-first century’s developed world went into hysterical panic over a globally average temperature increase of a few tenths of a degree, and,
on the basis of gross exaggerations of highly uncertain computer
projections combined into implausible chains of inference, proceeded to contemplate a rollback of the industrial age.

Richard Lindzen

--- SoupGate-Win32 v1.05
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On 25/07/2025 11:51, Andy Burns wrote:

I'm trying to rejuvenate an old pair of rimless glasses, which are an
unusual design, and were customised by the optician who supplied them,
who was a very accommodating bloke.

The nose piece is fitted to the lenses by a threaded 1.3mm pin and a
thick wire which go through a drilled 1.5mm hole and a dremelled slot respectively.

<http://andyburns.uk/misc/glasses1.jpg>

The arms 'wedge' over the thick wires and tiny nuts hold them onto the threaded pin (the arms connect to the nose-side of the lenses instead of
the ears-side, which is the unusual feature that I like about them).

The wires must have been bent around the slot after the pins inserted
through the holes, so I had to slightly bend them to take the nose piece apart, that's why they look slightly mangled, but I can put that right
when re-assembling them.

<http://andyburns.uk/misc/glasses2.jpg>

I seem to remember he called it a grommet which held the pin in the
hole, years of nose-grease has rotted these grommets/pins/tubes away, I
can see various grommets etc on optician suppliers, but most are for
"normal" rimless frames, e.g. these double pins

<https://blog.sbf5.com/2019/07/assembling-frames-on-rimless-glasses>

I think what I need is like a bushing 1.5mm od, 1.3mm id maybe 2-3mmm
long, clear plastic ... any suggestions?

Preferably without having to buy hundreds of the things from the USA.

Clear heat shrink tubing? eg eBay 404149308232. You'd probably need to
try different sizes.

Or you can get (eBay) clear silicone tubing in small diameters. As far
as I can see, not as small as you need, but of course it will thin out
when stretched.

--
SS

--- SoupGate-Win32 v1.05
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The Natural Philosopher wrote:

Andy Burns wrote:

I think what I need is like a bushing 1.5mm od, 1.3mm id maybe 2-3mmm
long, clear plastic ... any suggestions?

!%$**£! Aha, Would clear heat shrink tubing do the job?

https://www.ebay.co.uk/itm/185013811616

I might even have some, perhaps not small enough.
When you buy it, presumably the diameter specified is non-shrunk?

--- SoupGate-Win32 v1.05
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On 25/07/2025 13:26, Andy Burns wrote:

The Natural Philosopher wrote:

Andy Burns wrote:

I think what I need is like a bushing 1.5mm od, 1.3mm id maybe 2-3mmm
long, clear plastic ... any suggestions?

!%$**£! Aha, Would clear heat shrink tubing do the job?

https://www.ebay.co.uk/itm/185013811616

I might even have some, perhaps not small enough.
When you buy it, presumably the diameter specified is non-shrunk?

I believe so. Yup. I have a box of several hundred assorted ones here.
Its the unshrunk dimension

Hint. Dropping unsorts an open box of sorted assorted heat shrinks.
--
“It is not the truth of Marxism that explains the willingness of intellectuals to believe it, but the power that it confers on
intellectuals, in their attempts to control the world. And since...it is
futile to reason someone out of a thing that he was not reasoned into,
we can conclude that Marxism owes its remarkable power to survive every criticism to the fact that it is not a truth-directed but a
power-directed system of thought.”
Sir Roger Scruton

--- SoupGate-Win32 v1.05
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The Natural Philosopher wrote:

Dropping unsorts an open box of sorted assorted heat shrinks

I tend to keep my semi-sorted odds and ends in clear plastic bags within
the boxes ... stops them getting tangled or unsorted.

So far I've found the huge heat shrink, some pre-cut red/black pieces,
but not the rest ...

--- SoupGate-Win32 v1.05
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On 25/07/2025 11:51, Andy Burns wrote:

I'm trying to rejuvenate an old pair of rimless glasses, which are an
unusual design, and were customised by the optician who supplied them,
who was a very accommodating bloke.

The nose piece is fitted to the lenses by a threaded 1.3mm pin and a
thick wire which go through a drilled 1.5mm hole and a dremelled slot respectively.

<http://andyburns.uk/misc/glasses1.jpg>

The arms 'wedge' over the thick wires and tiny nuts hold them onto the threaded pin (the arms connect to the nose-side of the lenses instead of
the ears-side, which is the unusual feature that I like about them).

The wires must have been bent around the slot after the pins inserted
through the holes, so I had to slightly bend them to take the nose piece apart, that's why they look slightly mangled, but I can put that right
when re-assembling them.

<http://andyburns.uk/misc/glasses2.jpg>

I seem to remember he called it a grommet which held the pin in the
hole, years of nose-grease has rotted these grommets/pins/tubes away, I
can see various grommets etc on optician suppliers, but most are for
"normal" rimless frames, e.g. these double pins

<https://blog.sbf5.com/2019/07/assembling-frames-on-rimless-glasses>

I think what I need is like a bushing 1.5mm od, 1.3mm id maybe 2-3mmm
long, clear plastic ... any suggestions?

Preferably without having to buy hundreds of the things from the USA.

I wonder if the grommet was there to provide a bit of "give".

If so, could you use latex solution when you reassemble the specs?

--
PA
--

--- SoupGate-Win32 v1.05
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On 25/07/2025 11:51, Andy Burns wrote:

I'm trying to rejuvenate an old pair of rimless glasses, which are an
unusual design, and were customised by the optician who supplied them,
who was a very accommodating bloke.

The nose piece is fitted to the lenses by a threaded 1.3mm pin and a
thick wire which go through a drilled 1.5mm hole and a dremelled slot respectively.

<http://andyburns.uk/misc/glasses1.jpg>

The arms 'wedge' over the thick wires and tiny nuts hold them onto the threaded pin (the arms connect to the nose-side of the lenses instead of
the ears-side, which is the unusual feature that I like about them).

The wires must have been bent around the slot after the pins inserted
through the holes, so I had to slightly bend them to take the nose piece apart, that's why they look slightly mangled, but I can put that right
when re-assembling them.

<http://andyburns.uk/misc/glasses2.jpg>

I seem to remember he called it a grommet which held the pin in the
hole, years of nose-grease has rotted these grommets/pins/tubes away, I
can see various grommets etc on optician suppliers, but most are for
"normal" rimless frames, e.g. these double pins

<https://blog.sbf5.com/2019/07/assembling-frames-on-rimless-glasses>

I think what I need is like a bushing 1.5mm od, 1.3mm id maybe 2-3mmm
long, clear plastic ... any suggestions?

Preferably without having to buy hundreds of the things from the USA.

Not sure I fully understand what's required, but I wondered if, rather
than use a tube, you could wrap a length of thin polythene or clingfilm
round the pin. If left a bit long, when screwed down it would get
compressed and grip the lens.

I doubt it would make any practical difference, but you could wrap the
plastic round the pin until it was /just/ to wide to go through the hole
in the lens, then put the frame in the freezer for a while to get it to contract a fraction of a mm and try to get it through.

--
Jeff

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Peter Able wrote:

I wonder if the grommet was there to provide a bit of "give".

I don't think so ... one side had gone a bit waggly, the nut on the
other side was tightened firmly, the waggly side wouldn't tighten properly.
The way the arm connect, there's plenty of "spring" in them.

If so, could you use latex solution when you reassemble the specs?

--- SoupGate-Win32 v1.05
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Jeff Layman wrote:

Not sure I fully understand what's required

from the remnants that were squished under the nut, more or less an 'O'
ring with od 2mm, id 1.4mm, cs about 0.75mm

but I wondered if, rather than use a tube, you could wrap a length
of thin polythene or clingfilm round the pin. If left a bit long,
when screwed down it would get compressed and grip the lens.

Would be rather fiddly for my mitts, I'll keep playing hunt the
heatshrink tube, even if I have to test it with a coloured piece before
buying some clear if it works.

--- SoupGate-Win32 v1.05
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