\"Headlight\" polishing...

[Don Y]

On 2/24/2023 5:14 PM, Lasse Langwadt Christensen wrote:

lørdag den 25. februar 2023 kl. 00.19.24 UTC+1 skrev Don Y:
On 2/24/2023 3:10 PM, Lasse Langwadt Christensen wrote:
Bicycles are suicide. Motorcycles only slightly less so. And,
don\'t even THINK of a moped or scooter (worst of both worlds).
We see a fair number of recumbent bikes -- with tall \"flags\"
attached in the hope of making them more visible. Good luck
with that!

depends on where you are, in some place the only sensible way to get around is
by bicycle, (with electric assist if you don\'t want to pedal so much)
We have extensive \"bike paths\" through town. But, they are largely
recreational -- you won\'t be able to directly access any businesses,
medical facilities, etc. via them.

https://img2.thejournal.ie/article/4785733/river

Here, the more common approach is a small ICE mounted on the
bicycle.

here that would be a moped, and it would need to type approved as
such from the manufacturer and you need to have liability insurance
and wear a helmet and if you were born after 1995 you need to have
some form of drivers license

A moped is a different beast -- designed with the motor as part of
the initial sale.

These are conventional bicycles that their owners have opted to
*bolt* an engine onto.

There are limitations as to engine displacement in much the
same way there are power limitations of electric versions
of similar \"vehicles\"

I wonder where trikes fit in the mix? And, just what you can
ride on a *sidewalk*...

sidewalks are for walking
Yes, yet I can legally operate my electric wheelchair on them!
The law doesn\'t say that I have to medically NEED the wheelchair...

And, I suspect these \"one wheels\" and electric/ICE skateboards
probably fall in that grey area, as well.

here they are, for now, classified as pedetrians

[sic]? s.b. \"pedeStrians\"?

 

[Don Y]

On 2/24/2023 5:06 PM, Lasse Langwadt Christensen wrote:

lørdag den 25. februar 2023 kl. 00.21.40 UTC+1 skrev Don Y:
On 2/24/2023 2:50 PM, Lasse Langwadt Christensen wrote:
daylight running lights are required all over Europe, and it makes a huge difference.
Running lights, here, are not the same as having your *headlights* on.
They are typically far less light output... almost as if your turn signal
was permanently illuminated. Almost *decorative*!

here you can use either, just need (front) lights on all the time

I think the running lights come on regardless. The thinking being
that you don\'t want to waste all that power when your goal is just to
\"be noticeable\".

Some vehicles have \"two color\" lamps; normally they act as running lights
but, when you signal a turn, they flash yellow/off. So you will see
a car with a *white* \"turn signal, steady on (running light) and the
other flashing yellow (until the turn is completed).

Unfortunately some numb-nut decided that to save energy it should only be on the front,
so lot of cars driving around in the dark with no rear lights because they forget to turn on the lights
That was then \"fixed\" by requiring all new cars have automatic lights, which doesn\'t understand fog or rain
We can select from on, off and automatic. So, it\'s still possible to
drive, at night, without lights.

sure, but if you have the front lights on all the time it is easy to forget that you don\'t have the rear lights on
unless their are automatic or you turn them on manually

The automatic setting often results in the headlights (not running
lights) coming on when the car passes through shadow (under overpasses,
etc.).

I\'ve debated whether or not the car could be smarter and realize that
\"it\'s not dark out\". OTOH, if the car were to travel through a
darkened area (e.g., tunnel), you wouldn\'t want it to decide, \"no,
it\'s not REALLY dark so keep the lights off\".

And. there are often times where it is dark/overcast in one
part of town (\"local weather\") but not the area you were in
previously. E.g., I can drive from heavy rain to \"clear\"
several times while trying to get across town (10+ miles).

 

[Clifford Heath]

On 25/02/23 10:19, Don Y wrote:

On 2/24/2023 3:10 PM, Lasse Langwadt Christensen wrote:
Bicycles are suicide. Motorcycles only slightly less so. And,
don\'t even THINK of a moped or scooter (worst of both worlds).
We see a fair number of recumbent bikes -- with tall \"flags\"
attached in the hope of making them more visible. Good luck
with that!

depends on where you are, in some place the only sensible way to get
around is
by bicycle, (with electric assist if you don\'t want to pedal so much)

We have extensive \"bike paths\" through town.  But, they are largely
recreational -- you won\'t be able to directly access any businesses,
medical facilities, etc. via them.

https://img2.thejournal.ie/article/4785733/river

Here, the more common approach is a small ICE mounted on the
bicycle.

I wonder where trikes fit in the mix? And, just what you can
ride on a *sidewalk*...

sidewalks are for walking

Yes, yet I can legally operate my electric wheelchair on them!
The law doesn\'t say that I have to medically NEED the wheelchair...

Here, electric vehicles that cannot travel above 7km/hr are allowed on
footpaths.

 

[Don Y]

On 2/24/2023 10:00 PM, Clifford Heath wrote:

Yes, yet I can legally operate my electric wheelchair on them!
The law doesn\'t say that I have to medically NEED the wheelchair...

Here, electric vehicles that cannot travel above 7km/hr are allowed on footpaths.

No concern for power (engine displacement)?

I.e., could I drive a Sherman tank down a footpath,
as long as the speed was limited to 7mph? (despite the
fact that it could still cause a boatload of damage
even at that speed -- as well as likely being considerably
wider and heavier than the path might support)

Our different \"classes\" specify speed and power.
So, a 300 pound individual would be constrained
to a slower *effective* speed than a 100 pounder.

 

[Clifford Heath]

On 25/02/23 16:49, Don Y wrote:

On 2/24/2023 10:00 PM, Clifford Heath wrote:
Yes, yet I can legally operate my electric wheelchair on them!
The law doesn\'t say that I have to medically NEED the wheelchair...

Here, electric vehicles that cannot travel above 7km/hr are allowed on
footpaths.

No concern for power (engine displacement)?

I.e., could I drive a Sherman tank down a footpath,
as long as the speed was limited to 7mph?  (despite the
fact that it could still cause a boatload of damage
even at that speed -- as well as likely being considerably
wider and heavier than the path might support)

Our different \"classes\" specify speed and power.
So, a 300 pound individual would be constrained
to a slower *effective* speed than a 100 pounder.

I\'m sure there are other requirements as well.

Perhaps I should have said \"vehicles that can travel above 7km/hr are
not allowed on footpaths\". I can\'t easily pointto the precise regulation
however.

 

[Don Y]

On 2/25/2023 12:36 AM, Clifford Heath wrote:

On 25/02/23 16:49, Don Y wrote:
On 2/24/2023 10:00 PM, Clifford Heath wrote:
Yes, yet I can legally operate my electric wheelchair on them!
The law doesn\'t say that I have to medically NEED the wheelchair...

Here, electric vehicles that cannot travel above 7km/hr are allowed on
footpaths.

No concern for power (engine displacement)?

I.e., could I drive a Sherman tank down a footpath,
as long as the speed was limited to 7mph?  (despite the
fact that it could still cause a boatload of damage
even at that speed -- as well as likely being considerably
wider and heavier than the path might support)

Our different \"classes\" specify speed and power.
So, a 300 pound individual would be constrained
to a slower *effective* speed than a 100 pounder.

I\'m sure there are other requirements as well.

Perhaps I should have said \"vehicles that can travel above 7km/hr are not
allowed on footpaths\". I can\'t easily pointto the precise regulation however.

*Can* as opposed to *do*. So, most electric wheelchairs would be
disqualified (10km/hr for a \"normal\" chair; about 50% faster for
the \'Quickie\' TmReg models)

No doubt, they are focusing on reaction times (?)

 

[Liz Tuddenham]

Don Y <blockedofcourse@foo.invalid> wrote:

[...]

... I am concerned about the characteristics of the *material*.

Glass would be ideal -- but is costly to \"mold\", esp in larger sizes.
It\'s clear, heat/solvent/abrasion/UV resistant, a decent insulator,
easily cleaned (regardless of shape), etc.

Car manufacturers have been moulding glass headlamps for over 80 years.
If the modern shapes can\'t be moulded economically they should let
engineers design the cars instead of stylists.


--
~ Liz Tuddenham ~
(Remove the \".invalid\"s and add \".co.uk\" to reply)
www.poppyrecords.co.uk

 

[Dean Hoffman]

On Friday, February 24, 2023 at 3:38:00 PM UTC-6, Don Y wrote:

On 2/24/2023 1:26 PM, Dean Hoffman wrote:
Nebraska, USA had annual inspections. The fee was mandated at $3/inspection
or so.

The gas/service stations lost money doing them. The vehicle passed if the
lights worked and the wipers hadn\'t fallen off as a result.

At least one state required all vehicles to run with headlights on during
the day. The lawmakers noticed that motorcycles stood out on the roads
because bikers usually ran with theirs on. Well, if a little is good, a
lot is better reasoned the lawmakers. Not so in the real world. I don\'t
remember if motorcycles were inspected.
Likely not. With half as many wheels, they were half as likely to
have any \"issues\", right? <rolls eyes

I\'ve toyed with the idea of getting a bike, here. But, too many
crazy drivers that fail to see anything smaller than a Mack truck
(i.e., only worry about things that can hurt *them*!)

Bicycles are suicide. Motorcycles only slightly less so. And,
don\'t even THINK of a moped or scooter (worst of both worlds).
We see a fair number of recumbent bikes -- with tall \"flags\"
attached in the hope of making them more visible. Good luck
with that!

I wonder where trikes fit in the mix? And, just what you can
ride on a *sidewalk*..

I was looking at trikes one cold day. I\'ve never actually seen a reverse trike on the road.
There seemed to be a lot of Can Ams for sale cheap. It seemed like people bought them but didn\'t
really want them after they had them awhile.
Piaggio makes one. <https://www.piaggio.com/us_EN/models/mp3/> The links I\'ve found refer to them as scooters. Those things are fancy with all sorts of modern electronics.
.. <https://allbikeprice.com/yamaha-niken-price-specs-top-speed-review/>
The Yamaha\'s top speed is supposed to be around 135 mph. That might be fast enough for California. Both the Piaggio and Niken tilt.
The reverse trikes should be more noticeable.
One bad thing about motorcycles is the front turn signals are so close to the headlight. I\'ve had only one bike that had a switch to turn the headlight off. All since then have the headlight on when the ignition is on.
I added a couple fog lights to my trike down by the front wheel. There\'s a switch on the tank so I can shut them off if I meet vehicles at night. They stay on during the day.

 

[wmartin]

On 2/25/23 02:20, Liz Tuddenham wrote:

Don Y <blockedofcourse@foo.invalid> wrote:

[...]
... I am concerned about the characteristics of the *material*.

Glass would be ideal -- but is costly to \"mold\", esp in larger sizes.
It\'s clear, heat/solvent/abrasion/UV resistant, a decent insulator,
easily cleaned (regardless of shape), etc.

Car manufacturers have been moulding glass headlamps for over 80 years.
If the modern shapes can\'t be moulded economically they should let
engineers design the cars instead of stylists.

hehe, then everything will look like a 1990s Subaru

 

[Liz Tuddenham]

wmartin <wwm@wwmartin.net> wrote:

On 2/25/23 02:20, Liz Tuddenham wrote:
Don Y <blockedofcourse@foo.invalid> wrote:

[...]
... I am concerned about the characteristics of the *material*.

Glass would be ideal -- but is costly to \"mold\", esp in larger sizes.
It\'s clear, heat/solvent/abrasion/UV resistant, a decent insulator,
easily cleaned (regardless of shape), etc.

Car manufacturers have been moulding glass headlamps for over 80 years.
If the modern shapes can\'t be moulded economically they should let
engineers design the cars instead of stylists.


hehe, then everything will look like a 1990s Subaru

I drive a box van - so I\'m quite happy to have it look like a box. I\'m
most definitley NOT happy to have to polish and re-coat expensive
stupidly-made headlamps each year for the sake of \'style\'.


--
~ Liz Tuddenham ~
(Remove the \".invalid\"s and add \".co.uk\" to reply)
www.poppyrecords.co.uk

 

[Don Y]

On 2/25/2023 7:30 AM, Dean Hoffman wrote:

I wonder where trikes fit in the mix? And, just what you can ride on a
*sidewalk*..

I was looking at trikes one cold day. I\'ve never actually seen a reverse
trike on the road.

There are quite a few, here. They look... \"uncomfortable\". Not in the
physical sense but, rather, if your mind is thinking \"2 wheeled motorcycle\"
and all of the sensations that accompany *that* experience, the reverse
trike seems like it takes all of that away from you.

With a regular trike, you\'re still looking out, over the fork, at a single
wheel. The ass end just feels really \"stiff\".

Reverse trike, it\'s more like you\'re riding an oversized ATV -- and
just misplaced one of the rear wheels!

There seemed to be a lot of Can Ams for sale cheap. It
seemed like people bought them but didn\'t really want them after they had
them awhile.

Could have been a \"uniqueness\" impulse buy. It\'s hard to see what the
appeal would be (seems more complex to build than a trike) other than
\"wow! look at that crazy motorcycle!\"

Piaggio makes one. <https://www.piaggio.com/us_EN/models/mp3/> The links
I\'ve found refer to them as scooters. Those things are fancy with all sorts
of modern electronics. .

I saw some \"concept drawings\" for extremely narrow body cars
(essentially 4 wheel motorcycles -- like the plaggio but with
an extra rear) a while back. Again, not sure what the appeal
there, is... a motorcycle that doesn\'t tip over??

I\'d much prefer a motorcycle with sidecar (if looking for \"unique\")
but think that would quickly fall into the \"I *thought* it was
a good idea, but...\" category.

https://allbikeprice.com/yamaha-niken-price-specs-top-speed-review/

The Yamaha\'s top speed is supposed to be around 135 mph. That might be fast
enough for California. Both the Piaggio and Niken tilt.

The reverse trikes should be more noticeable.

I\'m watching to see what segway does with the egg. I figure if it\'s
OK for me to ride wheelchair on sidewalk, maybe that, as well? (I
sure as shit wouldn\'t ride it on the road -- unless escorted by a pair
of Mack trucks, front and rear!)

One bad thing about motorcycles is the front turn signals are so close to
the headlight. I\'ve had only one bike that had a switch to turn the
headlight off. All since then have the headlight on when the ignition is
on.

\"Safety\" <rolls eyes>

I added a couple fog lights to my trike down by the front wheel. There\'s a
switch on the tank so I can shut them off if I meet vehicles at night. They
stay on during the day.

 

[Don Y]

On 2/24/2023 3:28 PM, Martin Brown wrote:

On 24/02/2023 20:43, Don Y wrote:
On 2/24/2023 2:13 AM, Martin Brown wrote:

If you can scratch the surface with a shard of bottle glass then it isn\'t
made of glass (may devalue your fitting). Rear light clusters are almost
always some sort of polycarbonate I think. Water clear epoxy will repair
them but UV damage turns it yellow after a while.

Any organic solvent will quite likely turn a minor scratch into serious deep
cracks through the material so your only option is physical removal of the
surface crazing by rubbing compound followed by a new protective UV coat (or
leave well alone and live with cosmetic damage).

You might get away with a high viscosity silicone oil as a way of hiding the
hazing by filling the gaps rather than removing it.

Cosmetic defects on my headlights doesn\'t really bother me that much.

I\'m not interested in headlights (our car is garaged, driven very little
and probably sees less than a few hundred hours of sunlight -- including
driven time plus time spent sitting in unprotected parking lots -- each
year).

But, I am concerned about the characteristics of the *material*.

OK. So is the problem to make a clear optical envelope of some sort to contain
a device and protect it from the elements outdoors.
How important is it that the thing remains optically clear?

I could use a metal case if I didn\'t care about light transmissibility! :>

Flame polishing sometimes works OK for glass but using it on a flammable clear
plastic could be rather exciting in the wrong hands.

https://en.wikipedia.org/wiki/Flame_polishing

Glass would be ideal -- but is costly to \"mold\", esp in larger sizes.
It\'s clear, heat/solvent/abrasion/UV resistant, a decent insulator,
easily cleaned (regardless of shape), etc.

Plastics are easier/cheaper to fabricate in different shapes.
But, have downsides (as apparent, here).

The main downsides are being much softer than glass, prone to damage by the
wrong solvent cleaner (remember the plexiglass aquarium failure?).

Yes, any \"special\" material would need \"special\" cleaning
equipment/solutions. Like NOT using ammonia-based glass cleaner
on your monitors (yet, folks *do*!)

I think UV stability on treated plastics should be OK unless you are driving
them around at speed in a hot desert full of sand.

As the car companies settled on this material -- presumably
after an extensive evaluation of alternative materials (likely
including glass) -- I figured that was a good starting point.

Yet, see cars with this \"fog problem\" so imagine any use that
I make of the same material will, eventually, suffer from the
same problem.  Thus, either come up with an easy way of
cleaning/refinishing the items.  Or, an easy way of replacing them.

Plastics exposed to sunlight at low latitudes, UV and/or ozone will either
yellow, go brittle or craze - often a combination of all three. Unprotected
water clear epoxy goes yellow in about 3 years here.

I suspect in your conditions they go downhill pretty rapidly once the UV
coating has worn off due to being sand blasted by desert sand and grit.

Many materials degrade quickly outdoors, here. The sun is unrelenting.
Leave a piece of PVC pipe outside and it turns brown, then black.
But, only on the top, of course! :-/

Or, an alternate material.

Perspex or polycarbonate are the two materials of choice for this.
Which one is better for your requirements is another matter.

What sort of working lifetime are you aiming for?

If it was a piece of glass, I\'d target 10-20 years. If a piece
of fog-able (yes, folks, you heard it here!) plastic, I\'d hope
for \"several\" years. Not that the cost of replacement *parts*
would be a problem but, rather, that customers would get annoyed
with having to maintain it. (or, pissed at the cost of hiring-out
that service)

I need to check the newer electricity meters. Old ones had
a glass \"bowl\" covering as there was no need for anything
of an exotic shape. Newer ones have optical ports. Have
they accommodated them under glass? Or, switched to a plastic
\"bowl\"?

Think about how many maintenance things a *homeowner* has to
deal with: CO/smoke detectors, furnace filters, water
filters, etc. Businesses already, likely, have staff on hand
so, for them, it\'s just another chore for that staff.

> How exposed to direct sunlight?

As long as the sun is above the horizon. :<

 

[Don Y]

On 2/25/2023 3:20 AM, Liz Tuddenham wrote:

Don Y <blockedofcourse@foo.invalid> wrote:

[...]
... I am concerned about the characteristics of the *material*.

Glass would be ideal -- but is costly to \"mold\", esp in larger sizes.
It\'s clear, heat/solvent/abrasion/UV resistant, a decent insulator,
easily cleaned (regardless of shape), etc.

Car manufacturers have been moulding glass headlamps for over 80 years.
If the modern shapes can\'t be moulded economically they should let
engineers design the cars instead of stylists.

Lights are now becoming a fashion statement on cars. Esp the
tail light assemblies. I\'m sure a factor in the increased costs
of insurance as any damage to an assembly that spans the entire
rear side of the vehicle takes out the light assembly.

 

[wmartin]

On 2/25/23 11:14, Liz Tuddenham wrote:

wmartin <wwm@wwmartin.net> wrote:

On 2/25/23 02:20, Liz Tuddenham wrote:
Don Y <blockedofcourse@foo.invalid> wrote:

[...]
... I am concerned about the characteristics of the *material*.

Glass would be ideal -- but is costly to \"mold\", esp in larger sizes.
It\'s clear, heat/solvent/abrasion/UV resistant, a decent insulator,
easily cleaned (regardless of shape), etc.

Car manufacturers have been moulding glass headlamps for over 80 years.
If the modern shapes can\'t be moulded economically they should let
engineers design the cars instead of stylists.


hehe, then everything will look like a 1990s Subaru

I drive a box van - so I\'m quite happy to have it look like a box. I\'m
most definitley NOT happy to have to polish and re-coat expensive
stupidly-made headlamps each year for the sake of \'style\'.

yeah, I\'m actually with you on that one. That and the stupid clear coat
that seems designed to fail if left in the sun. I have a now retired
1985 van with an aftermarket paint job (cheap, no clear coat!) that is
still not flaking off, but my 2007 Tacoma has lost most of it\'s clear
coat already.

 

[Don Y]

On 2/26/2023 10:09 AM, wmartin wrote:

I drive a box van - so I\'m quite happy to have it look like a box.  I\'m
most definitley NOT happy to have to polish and re-coat expensive
stupidly-made headlamps each year for the sake of \'style\'.

yeah, I\'m actually with you on that one. That and the stupid clear coat that
seems designed to fail if left in the sun. I have a now retired 1985 van with
an aftermarket paint job (cheap, no clear coat!) that is still not flaking off,
but my 2007 Tacoma has lost most of it\'s clear coat already.

Not garaged?

Lately, the trend, here, has been to cover parking lots with solar arrays
(which has the pleasant side-effect of keeping cars cooler AND out of sun).

Sadly, the shopping centers haven\'t caught on, yet. Likely because the
occupants (who pay the utility bills) aren\'t the property owners (who
would incur the cost of installing the panels)

 

[Danielle Logan]

Buy Vape Cartridges Online
Variegated Plants For Sale Near Me
Bruce Banner #3 Strain
Buy Edibles Online
Buy Dank Gummies 500mg
Brass Knuckles For Sale
White Monstera For Sale
Buy AK-47 Weed Online
Buy One Up Mushroom Bar 3.5G
Tales Of Arabian Nights
Buy Green Crack Online
Ghost Train Haze For Sale
Buy Alaskan Thunder Fuck Online
Buy Budheads Edibles Chewy Cubes 600 mg
Buy Rhaphidophora tetrasperma
Buy Acapulco Gold strain online
Batman 66 Pinball For Sale
Monstera Albo For Sale Florida
Buy Gas Heads Edibles 600mg
Buy Bhang Cartridges Online
Philodendron fibraecataphyllum
Buy Iron Man Pinball Online
Buy Sour Diesel Online
Caudex (Beaucarnea)
Twilight Zone Pinball For Sale
Buy Nova Vape Carts Online
Maranta Lemon Lime For Sale
Philodendron Caramel Marble Variegated
Blueberry Strain For Sale
Pinball Machine Star Wars
Philodendron Florida Beauty Variegata
Buy Kali Mist Online
Jurassic Park Pinball
Buy Chocolope Online
Buy Durban Poison Online
Buy Spliffin Vape Cartridges Online
Buy Skywalker OG Online
Buy Push Vape Cartridges Online
Buy Wonders 1000mg THC Canna Lean Online
Buy Grapefruit Online
Friendly Farms Carts For Sale
Buy Lemon Haze Strain
Buy Weed Online
Variegated Plant Shop
Pinball Machine For Sale Near Me
eBAY PinBall Machine
Buy Grease Monkey Exotic Carts
710 Kingpen Catridges For Sale
Buy Moonrock clear carts online
Rare Variegated Plants For Sale
Variegated Plants For Sale UK
Variegated Plants For Sale NZ
Philodendron Florida Beauty Variegated For Sale
Rove Carts For Sale
Buy Stiiizy Carts Online


https://megaweedmarketltd.com/
https://qualitypinballcompany.com/
https://qualityvariegatedplants.com/

https://megaweedmarketltd.com/product/bruce_banner_strain/
https://megaweedmarketltd.com/product/dank_gummies/
https://megaweedmarketltd.com/product/brass_knuckles_for_sale/
https://qualityvariegatedplants.com/product/white-monstera-for-sale/
https://megaweedmarketltd.com/product/ak_47_strain/
https://megaweedmarketltd.com/product/one_up_bar/
https://qualitypinballcompany.com/product/tales_of_arabian_nights/
https://megaweedmarketltd.com/product/green_crack_strain/
https://megaweedmarketltd.com/product/ghost-train-haze/
https://megaweedmarketltd.com/product/buy-alaskan-thunder-fuck-online/
https://megaweedmarketltd.com/product/budheads/
https://qualityvariegatedplants.com/product/buy-rhaphidophora-tetrasperma/
https://megaweedmarketltd.com/product/buy-acapulco-gold-strain-online/
https://qualitypinballcompany.com/product/batman_66_pinball_for_sale/
https://qualityvariegatedplants.com/product/monstera-albo-for-sale-florida/
https://megaweedmarketltd.com/product/gas_heads/
https://megaweedmarketltd.com/product/buy_bhang_cartridges_online/
https://qualityvariegatedplants.com/product/philodendron-fibraecataphyllum/
https://qualitypinballcompany.com/product/buy_iron_man_pinball_online/
https://megaweedmarketltd.com/product/sour-diesel/
https://qualityvariegatedplants.com/product/caudex-beaucarnea/
https://qualitypinballcompany.com/product/twilight_zone_pinball_for_sale/
https://megaweedmarketltd.com/product/buy_nova_vape_carts_online/
https://qualityvariegatedplants.com/product/maranta-lemon-lime-for-sale/
https://qualityvariegatedplants.com/product/philodendron-caramel-marble/
https://megaweedmarketltd.com/product/blueberry_strain/
https://qualitypinballcompany.com/product/pinball_machine_star_wars/
https://qualityvariegatedplants.com/product/philodendron-florida-beauty-2/
https://megaweedmarketltd.com/product/kali-mist/
https://qualitypinballcompany.com/product/jurassic_park_pinball/
https://megaweedmarketltd.com/product/chocolope/
https://megaweedmarketltd.com/product/buy-durban-poison-online/
https://megaweedmarketltd.com/product/spliffin_cartridges/
https://megaweedmarketltd.com/product/skywalker_strain/
https://megaweedmarketltd.com/product/buy_push_vape_cartridges_online/
https://megaweedmarketltd.com/product/thc_lean/
https://megaweedmarketltd.com/product/grapefruit/
https://megaweedmarketltd.com/product/friendly_farms/
https://megaweedmarketltd.com/product/lemon_haze/
https://megaweedmarketltd.com/product/buy_grease_monkey_exotic_carts/
https://megaweedmarketltd.com/product/710_kingpen_cartridges_for_sale/
https://megaweedmarketltd.com/product/buy_moonrock_clear_carts_online/
https://qualityvariegatedplants.com/product/philodendron-florida-beauty-variegated-for-sale/
https://qualityvariegatedplants.com/product/philodendron-florida-beauty-for-sale-near-me/
https://megaweedmarketltd.com/product/rove_carts/
https://megaweedmarketltd.com/product/stiiizy-carts/

 

[Don Y]

On 2/24/2023 3:28 PM, Martin Brown wrote:

On 24/02/2023 20:43, Don Y wrote:
On 2/24/2023 2:13 AM, Martin Brown wrote:

If you can scratch the surface with a shard of bottle glass then it isn\'t
made of glass (may devalue your fitting). Rear light clusters are almost
always some sort of polycarbonate I think. Water clear epoxy will repair
them but UV damage turns it yellow after a while.

Any organic solvent will quite likely turn a minor scratch into serious deep
cracks through the material so your only option is physical removal of the
surface crazing by rubbing compound followed by a new protective UV coat (or
leave well alone and live with cosmetic damage).

You might get away with a high viscosity silicone oil as a way of hiding the
hazing by filling the gaps rather than removing it.

Cosmetic defects on my headlights doesn\'t really bother me that much.

I\'m not interested in headlights (our car is garaged, driven very little
and probably sees less than a few hundred hours of sunlight -- including
driven time plus time spent sitting in unprotected parking lots -- each
year).

But, I am concerned about the characteristics of the *material*.

OK. So is the problem to make a clear optical envelope of some sort to contain
a device and protect it from the elements outdoors.
How important is it that the thing remains optically clear?

I\'ve been thinking about other things that sit out in the sun...

Security cameras immediately came to mind!

So, I\'ve been looking at mine, neighbors, those on commercial
buildings to which I have access, etc.

Mine have glass in front of the camera -- but, it\'s just a flat plate.

Many commercial sites put their cameras in an enclosure, of sorts.
These also appear to have a glass \"window\" at the front.

But, I see lots of cameras with clear \"domes\" housing the
mechanism (allows the camera to be aimed without modifying the
mount). These *feel* like plastic. But, don\'t exhibit the
fogginess of headlights.

Of course, I have no idea how much exposure they\'ve seen.

But, I am starting to reexamine the idea that abrasion (and
car exhaust/pollutants, suggested here) might have more of
an impact than *just* UV exposure. Again, I cite the fact that
tail lights don\'t seem to suffer the same fate!

 

[wmartin]

On 2/26/23 11:29, Don Y wrote:

On 2/26/2023 10:09 AM, wmartin wrote:
I drive a box van - so I\'m quite happy to have it look like a box.  I\'m
most definitley NOT happy to have to polish and re-coat expensive
stupidly-made headlamps each year for the sake of \'style\'.

yeah, I\'m actually with you on that one. That and the stupid clear
coat that seems designed to fail if left in the sun. I have a now
retired 1985 van with an aftermarket paint job (cheap, no clear coat!)
that is still not flaking off, but my 2007 Tacoma has lost most of
it\'s clear coat already.

Not garaged?

Sad to say, it won\'t fit in the garage, alongside lathe & mill & few
racing toys.

Lately, the trend, here, has been to cover parking lots with solar arrays
(which has the pleasant side-effect of keeping cars cooler AND out of sun).

Sadly, the shopping centers haven\'t caught on, yet.  Likely because the
occupants (who pay the utility bills) aren\'t the property owners (who
would incur the cost of installing the panels)

 

[Don Y]

On 2/26/2023 6:55 PM, wmartin wrote:

On 2/26/23 11:29, Don Y wrote:
On 2/26/2023 10:09 AM, wmartin wrote:
I drive a box van - so I\'m quite happy to have it look like a box.  I\'m
most definitley NOT happy to have to polish and re-coat expensive
stupidly-made headlamps each year for the sake of \'style\'.

yeah, I\'m actually with you on that one. That and the stupid clear coat that
seems designed to fail if left in the sun. I have a now retired 1985 van
with an aftermarket paint job (cheap, no clear coat!) that is still not
flaking off, but my 2007 Tacoma has lost most of it\'s clear coat already.

Not garaged?

Sad to say, it won\'t fit in the garage, alongside lathe & mill & few racing toys.

Ah, you\'re lucky enough NOT to have a basement? :<

(I wonder if I could *dig* a basement under the house? I had a friend
who did that -- but starting from a crawlspace...)

Lately, the trend, here, has been to cover parking lots with solar arrays
(which has the pleasant side-effect of keeping cars cooler AND out of sun).

Sadly, the shopping centers haven\'t caught on, yet.  Likely because the
occupants (who pay the utility bills) aren\'t the property owners (who
would incur the cost of installing the panels)

 

[Martin Brown]

On 26/02/2023 23:53, Don Y wrote:

On 2/24/2023 3:28 PM, Martin Brown wrote:

OK. So is the problem to make a clear optical envelope of some sort to
contain a device and protect it from the elements outdoors.
How important is it that the thing remains optically clear?

I\'ve been thinking about other things that sit out in the sun...

Security cameras immediately came to mind!

So, I\'ve been looking at mine, neighbors, those on commercial
buildings to which I have access, etc.

Mine have glass in front of the camera -- but, it\'s just a flat plate.

Many commercial sites put their cameras in an enclosure, of sorts.
These also appear to have a glass \"window\" at the front.

But, I see lots of cameras with clear \"domes\" housing the
mechanism (allows the camera to be aimed without modifying the
mount).  These *feel* like plastic.  But, don\'t exhibit the
fogginess of headlights.

I asked my tame polymer chemist and their best suggestion was to try
thermoforming sunbed grade acrylic sheet which is a lot more tolerant.
It limits your choice of shape a bit though. eg

https://plasticsdirect.co.uk/products/sunbeds-acrylic-screens-and-parts-sunbed-perspex

Of course, I have no idea how much exposure they\'ve seen.

But, I am starting to reexamine the idea that abrasion (and
car exhaust/pollutants, suggested here) might have more of
an impact than *just* UV exposure.  Again, I cite the fact that
tail lights don\'t seem to suffer the same fate!

I suspect that is because they are on the trailing edge of the car and
don\'t get anything like as many energetic impacts from stuff flicked up
off the road by other traffic. I think abrasion takes most of the UV
protective surface coating off and strong sunlight does the rest.

--
Martin Brown