I have surveyed several on line suppliers of prescription spectacles and
found that most seem to use a similar web page arrangement and source the
ordered item from the US, although through a UK office. This web page
ordering system is very simple and is heavily biased to making a sale at
all costs. The short comings are that they only have a certain number of
frame fitting sizes and in order to get exactly what I want is impossible.

I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

The other problem is reviewing a chosen specification held in the 'Basket'
ready for purchase. I can't remember if I had decided on transition lenses
for the varifocals or not, but there no way to know. Opening the basket
just shows the PP logo.

On Tuesday, 11 May 2021 at 09:05:04 UTC+1, jon wrote:
I have surveyed several on line suppliers of prescription spectacles and
found that most seem to use a similar web page arrangement and source the
ordered item from the US, although through a UK office. This web page
ordering system is very simple and is heavily biased to making a sale at
all costs. The short comings are that they only have a certain number of
frame fitting sizes and in order to get exactly what I want is impossible..

I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

The other problem is reviewing a chosen specification held in the 'Basket'
ready for purchase. I can't remember if I had decided on transition lenses
for the varifocals or not, but there no way to know. Opening the basket
just shows the PP logo.

I have bought several pairs - for self and mother - from https://www.onestopglasses.co.uk/

All round excellent.

And owner Rick posts here!

(This is entirely without connection other than as above.)

"jon" wrote in message ...
I have surveyed several on line suppliers of prescription spectacles and
found that most seem to use a similar web page arrangement and source the
ordered item from the US, although through a UK office. This web page
ordering system is very simple and is heavily biased to making a sale at
all costs. The short comings are that they only have a certain number of
frame fitting sizes and in order to get exactly what I want is impossible.

I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

The other problem is reviewing a chosen specification held in the 'Basket'
ready for purchase. I can't remember if I had decided on transition lenses
for the varifocals or not, but there no way to know. Opening the basket
just shows the PP logo.

Never had any problem with Zenni. But I have a very simple prescription.

On Tue, 11 May 2021 08:05:00 -0000 (UTC), jon wrote:

snip

I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

snip
After my last eye test where they couldn't really explain how my
ReadySpecs readers appeared to be optimal for my use, for both close
and distant work, I though I would order some online and ordered 3
pairs, one as per my readers, one for longer work like driving and a
stronger pair for more close up work.

They arrived promptly (from Glasses Direct or some such), and I tried
them all on for a test but have never actually worn any of them since
because even though they are frameless and not particularly thick,
they are heavier than my ReadySpecs (so can fall off if working and I
face downwards), offer no better vision and are more complicated to
deal with (because my readers stay on all day)? ;-(

Cheers, T i m

On Tue, 11 May 2021 19:41:17 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile asshole's latest troll**** unread

"T i m" wrote in message
...
On Tue, 11 May 2021 08:05:00 -0000 (UTC), jon wrote:

snip

I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

snip
After my last eye test where they couldn't really explain how my
ReadySpecs readers appeared to be optimal for my use, for both close
and distant work, I though I would order some online and ordered 3
pairs, one as per my readers, one for longer work like driving and a
stronger pair for more close up work.

They arrived promptly (from Glasses Direct or some such), and
I tried them all on for a test but have never actually worn any
of them since because even though they are frameless and
not particularly thick, they are heavier than my ReadySpecs
(so can fall off if working and I face downwards),

That's because you havent got the arm length right.

offer no better vision and are more complicated to
deal with (because my readers stay on all day)? ;-(

On 09:05 11 May 2021, jon said:

I have surveyed several on line suppliers of prescription spectacles
and found that most seem to use a similar web page arrangement and
source the ordered item from the US, although through a UK office.
This web page ordering system is very simple and is heavily biased
to making a sale at all costs. The short comings are that they only
have a certain number of frame fitting sizes and in order to get
exactly what I want is impossible.

I ordered some £30 prescription rimless reading glasses which were
quite well made, but because I could not get a 16mm nose bridge my
eye pupils were not in the centre of the 50mm wide lenses.

The pupil distance of the final specs should not be affected by the
width of the bridge.

Unless the position of each pupil was positioned within each lens but
that's a strange way of doing it. Normally you measure the pupil to
pupil distance and ask the specs are made up to suit that.

On Tue, 11 May 2021 20:30:53 +1000, "Rod Speed"
wrote:

snip

They arrived promptly (from Glasses Direct or some such), and
I tried them all on for a test but have never actually worn any
of them since because even though they are frameless and
not particularly thick, they are heavier than my ReadySpecs
(so can fall off if working and I face downwards),

That's because you havent got the arm length right.

Is that something you specify when you order (in which case I would
have when did) or can adjust once you have them?

How do glasses with completely straight arms stay on peoples faces?

I generally have to bend or otherwise adjust the arms outwards to
reduce the pinching pressure on my head, even when that only results
in the arms ending up mostly parallel when fully opened.

Cheers, T i m

"polygonum_on_google" wrote in message
...
On Tuesday, 11 May 2021 at 09:05:04 UTC+1, jon wrote:
I have surveyed several on line suppliers of prescription spectacles and
found that most seem to use a similar web page arrangement and source the
ordered item from the US, although through a UK office. This web page
ordering system is very simple and is heavily biased to making a sale at
all costs. The short comings are that they only have a certain number of
frame fitting sizes and in order to get exactly what I want is
impossible.

I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

The other problem is reviewing a chosen specification held in the
'Basket'
ready for purchase. I can't remember if I had decided on transition
lenses
for the varifocals or not, but there no way to know. Opening the basket
just shows the PP logo.

I have bought several pairs - for self and mother - from
https://www.onestopglasses.co.uk/

metoo

at 15 quid if it didn't work out and I decided that I didn't like the
glasses, I hadn't lost very much

fortunately it did and I now have 3.

All round excellent.

And owner Rick posts here!

Oh does he :-)

I wonder if he might be able to comment upon how this business model works
then?

I can see from the invoice numbers that OSG don't sell glasses in huge
numbers, and at 15 pound a pair, the profit margin is going to tiny.

Yet (at least) one of his competitors can afford to advertise on TV.

How does that work then

"Owain Lastname" wrote in message
...
On Tuesday, 11 May 2021 at 09:05:04 UTC+1, jon wrote:
I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

Glasses Direct you can put in the measurements from your existing glasses
and they will find frames that match

https://www.glassesdirect.co.uk/best...ridge_width=16

What you actually need, regardless of frame fitting, is pupillary
distance.

GD can measure your pupillary distance from a photo
https://www.glassesdirect.co.uk/pupillary-distance/

Or there are online tool things
https://www.specsavers.co.uk/glasses...llary-distance

I just used a ruler and a mirror

On 11/05/2021 12:18, T i m wrote:
On Tue, 11 May 2021 20:30:53 +1000, "Rod Speed"
wrote:

snip

They arrived promptly (from Glasses Direct or some such), and
I tried them all on for a test but have never actually worn any
of them since because even though they are frameless and
not particularly thick, they are heavier than my ReadySpecs
(so can fall off if working and I face downwards),

That's because you havent got the arm length right.

Is that something you specify when you order (in which case I would
have when did) or can adjust once you have them?

How do glasses with completely straight arms stay on peoples faces?

I generally have to bend or otherwise adjust the arms outwards to
reduce the pinching pressure on my head, even when that only results
in the arms ending up mostly parallel when fully opened.

I have known opticians adjust the arms for you. This are Glasses
Direct's own instructions:
https://www.glassesdirect.co.uk/help...-your-glasses/

"jon" wrote in message ...

I have surveyed several on line suppliers of prescription spectacles and
found that most seem to use a similar web page arrangement and source the
ordered item from the US, although through a UK office. This web page
ordering system is very simple and is heavily biased to making a sale at
all costs. The short comings are that they only have a certain number of
frame fitting sizes and in order to get exactly what I want is impossible.

I ordered some £30 prescription rimless reading glasses which were quite
well made, but because I could not get a 16mm nose bridge my eye pupils
were not in the centre of the 50mm wide lenses.

The other problem is reviewing a chosen specification held in the 'Basket'
ready for purchase. I can't remember if I had decided on transition lenses
for the varifocals or not, but there no way to know. Opening the basket
just shows the PP logo.

Yesterday I took delivery of a pair of £6 specs from Selectspecs. Although
the £6 price includes single vision coated lenses, I opted for a set of
thinner lenses for an extra £5. The order took 9 calendar days from placing
the order to delivery. IMHO they are excellent. The only possible criticism
is that the frames and, in particular the arms, are quite delicate and are
unlikely to take much in the way of rough handling.

Given the quick turn round on the order, I'm certain that these were
assembled in the UK (no doubt from Chinese components)

Although Selectspecs can provide more complex lenses such as varifocals or
bifocals, I would probably still go to a local optician for these as from
past experience these can be problematic if not 100% right.

On Tue, 11 May 2021 20:30:53 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile asshole's latest troll**** unread

--
dennis@home to retarded trolling senile Rodent:
"sod off rod you don't have a clue about anything."
Message-ID:

On 11/05/2021 12:25, tim... wrote:


Oh does he :-)

I wonder if he might be able to comment upon how this business model
works then?

I can see from the invoice numbers that OSG don't sell glasses in huge
numbers, and at 15 pound a pair, the profit margin is going to tiny.

Yet (at least) one of his competitors can afford to advertise on TV.

How does that work then


To be fair it doesn't.

We have an 'actual' opticians that does OK and we supply wholesale to
other opticians too.

The website is a somewhat untapped resource. I should put more effort
into tapping it. It's harder than people might think though and at the
margins only really worthwhile if scaling up dramatically. One day perhaps.

Incidentally we made the first few thousand pairs of specs for a
competitor who advertises on TV. I guess some of us were destined to
work making other people rich

T i m wrote
Rod Speed wrote

They arrived promptly (from Glasses Direct or some such), and
I tried them all on for a test but have never actually worn any
of them since because even though they are frameless and
not particularly thick, they are heavier than my ReadySpecs
(so can fall off if working and I face downwards),

That's because you havent got the arm length right.

Is that something you specify when you order

Yes with the best of the online sellers. Its marked
on your current glasses arms with most glasses
so it should be easy to specify the arm length
you want from the ones that don't fall off.

(in which case I would have when did)

Not all allow you to specify that.

or can adjust once you have them?

You can with many of them with a hot air gun.
That's how they adjust them at the optometrist.

How do glasses with completely straight arms stay on peoples faces?

Those have more force towards the head so they grip better.

I generally have to bend or otherwise adjust the arms
outwards to reduce the pinching pressure on my head,

That's because you are big headed {-(

With the best of the online sellers you
can specify the width of the frames too.

even when that only results in the arms ending
up mostly parallel when fully opened.

On Wed, 12 May 2021 05:40:43 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

--
"Anonymous" to trolling senile Rodent Speed:
"You can **** off as you know less than pig **** you sad
little ignorant ****."
MID:

"R D S" wrote in message
...
On 11/05/2021 12:25, tim... wrote:


Oh does he :-)

I wonder if he might be able to comment upon how this business model
works then?

I can see from the invoice numbers that OSG don't sell glasses in huge
numbers, and at 15 pound a pair, the profit margin is going to tiny.

Yet (at least) one of his competitors can afford to advertise on TV.

How does that work then


To be fair it doesn't.

We have an 'actual' opticians that does OK and we supply wholesale to
other opticians too.


Yes I'd managed to work out that this was just one marketing channel for a
larger company and not just some guy trying to make an income for himself by
operating out of a shed

But I was still surprised by the limited traction that this retail item has
achieved

According to all the business gurus, "online" is the big new thing that
everyone should use to triple their sales and make their company worth
gazillions (there was one on last night's edition of "The Money Maker"
pushing that approach, - though I've yet to the end to see how it pans out).

OST seems to have achieved a reasonable presence in the marketplace, they
have 300 reviews on Trustpilot. As a comparison, a travel company that I
use where I can also see from invoice numbers that they have 50,000
customers per year (at substantially larger margins) also has 300 reviews.

OTOH Glassesdirect have 141,000 (I looked that up since I first asked the
question)

Though it wouldn't take much for this cheaper online sales channel to be
completely knocked on the head if high street opticians didn't charge such
absurd prices.

The website is a somewhat untapped resource. I should put more effort into
tapping it. It's harder than people might think though and at the margins
only really worthwhile if scaling up dramatically. One day perhaps.

surely there's a lot of work already expended in building the website, which
is wasted if there isn't enough footfall

what you need is better SEO - a search for "discount glasses online" sees
you nowhere (Even Specsavers, where the only online service that they offer
is appointment booking, scores better)

Incidentally we made the first few thousand pairs of specs for a
competitor who advertises on TV. I guess some of us were destined to work
making other people rich

I used to work for a small player in the mobile phone industry

They made more re-badged phones for a larger competitor than they made under
their own name

They are some companies that do nothing other than make products with
someone else name on

On Wednesday, May 12, 2021 at 4:31:42 PM UTC+1, tim... wrote:
"R D S" wrote in message
...
On 11/05/2021 12:25, tim... wrote:


Oh does he :-)

I wonder if he might be able to comment upon how this business model
works then?

I can see from the invoice numbers that OSG don't sell glasses in huge
numbers, and at 15 pound a pair, the profit margin is going to tiny.

Yet (at least) one of his competitors can afford to advertise on TV.

How does that work then


To be fair it doesn't.

We have an 'actual' opticians that does OK and we supply wholesale to
other opticians too.

Yes I'd managed to work out that this was just one marketing channel for a
larger company and not just some guy trying to make an income for himself by
operating out of a shed

But I was still surprised by the limited traction that this retail item has
achieved

According to all the business gurus, "online" is the big new thing that
everyone should use to triple their sales and make their company worth
gazillions (there was one on last night's edition of "The Money Maker"
pushing that approach, - though I've yet to the end to see how it pans out).

OST seems to have achieved a reasonable presence in the marketplace, they
have 300 reviews on Trustpilot. As a comparison, a travel company that I
use where I can also see from invoice numbers that they have 50,000
customers per year (at substantially larger margins) also has 300 reviews.

OTOH Glassesdirect have 141,000 (I looked that up since I first asked the
question)

Though it wouldn't take much for this cheaper online sales channel to be
completely knocked on the head if high street opticians didn't charge such
absurd prices.
The website is a somewhat untapped resource. I should put more effort into
tapping it. It's harder than people might think though and at the margins
only really worthwhile if scaling up dramatically. One day perhaps.
surely there's a lot of work already expended in building the website, which
is wasted if there isn't enough footfall

what you need is better SEO - a search for "discount glasses online" sees
you nowhere (Even Specsavers, where the only online service that they offer
is appointment booking, scores better)
Incidentally we made the first few thousand pairs of specs for a
competitor who advertises on TV. I guess some of us were destined to work
making other people rich
I used to work for a small player in the mobile phone industry

They made more re-badged phones for a larger competitor than they made under
their own name

They are some companies that do nothing other than make products with
someone else name on
RDS from your glasses range, can you recommend ones for DIY use? Ta.

On Wednesday, 12 May 2021 at 17:28:43 UTC+1, misterroy wrote:

RDS from your glasses range, can you recommend ones for DIY use? Ta.

You might consider Trivex lenses. Phenomenally tough. Very light.

On Wed, 12 May 2021 05:40:43 +1000, "Rod Speed"
wrote:

T i m wrote
Rod Speed wrote

They arrived promptly (from Glasses Direct or some such), and
I tried them all on for a test but have never actually worn any
of them since because even though they are frameless and
not particularly thick, they are heavier than my ReadySpecs
(so can fall off if working and I face downwards),

That's because you havent got the arm length right.

Is that something you specify when you order

Yes with the best of the online sellers.

OK. I didn't notice the option at the time if present.

Its marked
on your current glasses arms with most glasses
so it should be easy to specify the arm length
you want from the ones that don't fall off.

Ok. If the option is available etc.

(in which case I would have when did)

Not all allow you to specify that.

OK.

or can adjust once you have them?

You can with many of them with a hot air gun.

I have tried that with many glasses but some are plan plastic arms (no
wire) and so you have to hope they are made out of some sort of
thermo-plastic. I have got some pretty hot with a hot air gun and they
didn't seem to give or take a new set.

That's how they adjust them at the optometrist.

Ok.

How do glasses with completely straight arms stay on peoples faces?

Those have more force towards the head so they grip better.

Ok. That's how some of the cheapo readers I buy off eBay feel but the
issue is more in the default scope of the hinge than the arms. eg, I
can wear them as-is but they quickly break across the bridge. If I
open the hinge angle with a file (generally to 90 deg) they both fit
securely and last well.

I generally have to bend or otherwise adjust the arms
outwards to reduce the pinching pressure on my head,

That's because you are big headed {-(

That's true. I do have to buy a largeR hat or safely helmet but it's
never been the biggest yet (more like 3/4 up the scale).

With the best of the online sellers you
can specify the width of the frames too.

When I bought from GD I think there was a filter that let you specify
the eye spacing (at least) and then I chose the simplest (the least /
lightest frame / frameless) from that. I think I paid £75 for three
pairs or somesuch.

All that said, they felt about 3x heavier than my frameless moulded
plastic eBay readers.

Because these stay on my face most of the day, I don't tend to take
them off then lose them and that when they are off) seems to be when
they are also most likely to get dropped, lost, sat on and scratched.

So, (Ironically), these *very* cheap readers seem to last a lot longer
than any supposedly 'better' glasses might (I would have to have at
least two pairs, reading / driving) because they do everything.

I'm also now wearing a pair of X4's over the top of these 2.5 (ala The
Repair Shop) for fine soldering etc and that means I still don't take
these off and so again less likely to break / loose them. [1]

Cheers, T i m

[1] And of course I'm even less likely to want any new ones as I have
a box of 9 spare. ;-)

T i m wrote:

That's true. I do have to buy a largeR hat or safely helmet but it's
never been the biggest yet (more like 3/4 up the scale).

With the best of the online sellers you
can specify the width of the frames too.

I have the opposite problem, and tend to end up in the "Teen"
section to avoid looking like I am wearing a bay window.

Currently I have 50 16-130 and 48 15-130.

I haven't researched many online, but if I put those sort of
dimensions in, there is not a lot to see.

Chris
--
Chris J Dixon Nottingham UK
@ChrisJDixon1

Plant amazing Acers.

On Thu, 13 May 2021 08:34:13 +0100, Chris J Dixon
wrote:

T i m wrote:

That's true. I do have to buy a largeR hat or safely helmet but it's
never been the biggest yet (more like 3/4 up the scale).

With the best of the online sellers you
can specify the width of the frames too.

I have the opposite problem, and tend to end up in the "Teen"
section to avoid looking like I am wearing a bay window.

LOL!

Currently I have 50 16-130 and 48 15-130.

Sorry, I'm unfamiliar with those dimensions(?), unless we are on some
new tyre dimension thread? ;-)

I haven't researched many online, but if I put those sort of
dimensions in, there is not a lot to see.

With some working glasses on? ducks ;-)

Cheers, T i m

On Wed, 12 May 2021 23:20:30 +0100, T i m wrote:

or can adjust once you have them?

You can with many of them with a hot air gun.

I have tried that with many glasses but some are plan plastic arms (no
wire) and so you have to hope they are made out of some sort of
thermo-plastic. I have got some pretty hot with a hot air gun and they
didn't seem to give or take a new set.

I got my thermoset ones just right with a hot air gun. Tried it first on a
pair of ready readers with almost identical frames and it worked.
Made sure that the hot air got nowhere near the lenses. Just a guess, but
the lenses might have a bit of inherent stress from the forming and even
relatively low temperature might 'relax' them.

That's how they adjust them at the optometrist.

Ha! Mine tried a glorified, fixed, hair dryer. I did point out that it
wouldn't work and stopped her from getting the lenses in the airstream.

Made the mistake of having flat metal arms on my latest pairs - can't bend
it of course and the hot air ain't going to work! Possibly a MAPP torch
would, or oxy-propane - that's a take arm off specs job.
--
Peter.
The gods will stay away
whilst religions hold sway

T i m wrote:

On Thu, 13 May 2021 08:34:13 +0100, Chris J Dixon
wrote:

Currently I have 50 16-130 and 48 15-130.

Sorry, I'm unfamiliar with those dimensions(?), unless we are on some
new tyre dimension thread? ;-)

https://www.allaboutvision.com/eyegl...frame-size.htm


I haven't researched many online, but if I put those sort of
dimensions in, there is not a lot to see.

With some working glasses on? ducks ;-)

:-)

Chris
--
Chris J Dixon Nottingham UK
@ChrisJDixon1

Plant amazing Acers.

On Thu, 13 May 2021 17:52:34 +0100, Chris J Dixon
wrote:

T i m wrote:

On Thu, 13 May 2021 08:34:13 +0100, Chris J Dixon
wrote:

Currently I have 50 16-130 and 48 15-130.

Sorry, I'm unfamiliar with those dimensions(?), unless we are on some
new tyre dimension thread? ;-)

https://www.allaboutvision.com/eyegl...frame-size.htm

Ah, cheers. ;-)

FWIW, my readers are 44-20-137 (although it's difficult to be sure as
everything is tapered a bit.


Cheers, T i m

On Thu, 13 May 2021 11:30:39 -0700 (PDT), Owain Lastname wrote:

On Thursday, 13 May 2021 at 16:05:30 UTC+1, PeterC wrote:
Made the mistake of having flat metal arms on my latest pairs - can't bend
it of course and the hot air ain't going to work! Possibly a MAPP torch
would, or oxy-propane - that's a take arm off specs job.

Certainly a take specs off head job.

Owain

Another way of getting flamed!
--
Peter.
The gods will stay away
whilst religions hold sway

On Thu, 13 May 2021 16:05:27 +0100, PeterC
wrote:

On Wed, 12 May 2021 23:20:30 +0100, T i m wrote:

or can adjust once you have them?

You can with many of them with a hot air gun.

I have tried that with many glasses but some are plan plastic arms (no
wire) and so you have to hope they are made out of some sort of
thermo-plastic. I have got some pretty hot with a hot air gun and they
didn't seem to give or take a new set.

I got my thermoset ones just right with a hot air gun. Tried it first on a
pair of ready readers with almost identical frames and it worked.

Good plan.

Made sure that the hot air got nowhere near the lenses. Just a guess, but
the lenses might have a bit of inherent stress from the forming and even
relatively low temperature might 'relax' them.

Good point.

That's how they adjust them at the optometrist.

Ha! Mine tried a glorified, fixed, hair dryer. I did point out that it
wouldn't work and stopped her from getting the lenses in the airstream.

So called 'professionals'. ;-(

Made the mistake of having flat metal arms on my latest pairs - can't bend
it of course and the hot air ain't going to work!

Well, you can get things pretty hot with even cold air, as NASA know
with heatproof tiles. ;-)

Possibly a MAPP torch
would, or oxy-propane - that's a take arm off specs job.

And what if you have plastic covers over the metal ends (that don't
come off)?

I have a small hot-air gun I use for heatshrink tubing that is pretty
hot but gives a fairly well focused column of air. If I want similar
with even more heat, then the heat gun on my SM reflow station should
do it. ;-)

If I can find my GD glasses, I'll check out all those fitting numbers
and see if it's that they don't fit me (and if I can adjust them) or,
without having the hooks that go right round your ears, they are just
too heavy for my usage / expectations (eg, expecting them to stay put
like these all plastic readers generally do)?

Cheers, T i m

On 14/05/2021 12:05, T i m wrote:
On Thu, 13 May 2021 16:05:27 +0100, PeterC
wrote:

On Wed, 12 May 2021 23:20:30 +0100, T i m wrote:

or can adjust once you have them?

You can with many of them with a hot air gun.

I have tried that with many glasses but some are plan plastic arms (no
wire) and so you have to hope they are made out of some sort of
thermo-plastic. I have got some pretty hot with a hot air gun and they
didn't seem to give or take a new set.

I got my thermoset ones just right with a hot air gun. Tried it first on a
pair of ready readers with almost identical frames and it worked.

Good plan.

Made sure that the hot air got nowhere near the lenses. Just a guess, but
the lenses might have a bit of inherent stress from the forming and even
relatively low temperature might 'relax' them.

Good point.

That's how they adjust them at the optometrist.

Ha! Mine tried a glorified, fixed, hair dryer. I did point out that it
wouldn't work and stopped her from getting the lenses in the airstream.

So called 'professionals'. ;-(

Made the mistake of having flat metal arms on my latest pairs - can't bend
it of course and the hot air ain't going to work!

Well, you can get things pretty hot with even cold air, as NASA know
with heatproof tiles. ;-)

It is hot air that is caused principally by a shockwave that created the
need for heatproof tiles.

On Fri, 14 May 2021 12:05:49 +0100, T i m wrote:

Made the mistake of having flat metal arms on my latest pairs - can't bend
it of course and the hot air ain't going to work!

Well, you can get things pretty hot with even cold air, as NASA know
with heatproof tiles. ;-)

I never could run that fast.
--
Peter.
The gods will stay away
whilst religions hold sway

On Fri, 14 May 2021 17:08:34 +0100, PeterC
wrote:

On Fri, 14 May 2021 12:05:49 +0100, T i m wrote:

Made the mistake of having flat metal arms on my latest pairs - can't bend
it of course and the hot air ain't going to work!

Well, you can get things pretty hot with even cold air, as NASA know
with heatproof tiles. ;-)

I never could run that fast.

Yeah, you would have to be going some if you were still wearing them
and may then have nothing to hang your mask on! ;-(

Cheers, T i m