Graffiti Etched Windows?

[Yew]

M sure my chemistry teacher said that hf acid propagates the decomposition of calcium in your bones. But won't be used it's self. Meaning it could get rid of your entire bone structure

 

[The Barlow Boy]

Many, many 319s have etched windows.

 

[tinselworm]

Can't say i've ever seen an etched window on FGW

 

[BestWestern]

Can't say i've ever seen an etched window on FGW

As previously stated, there is a very prolific individual in the Bristol area who is responsible for a huge amount of etching on FGW's West DMU stock. Most of the units now bear scars from this moron's efforts. Sadly, FGW is not one of the more proactive TOC's when it comes to removing this rubbish or dealing with the offenders, despite much of it occuring in full view of on-board CCTV cameras. Defect books have even been filled in reporting this damage and suggesting that perhaps somebody might find the time to view the CCTV footage - but sadly all to no avail.

 

[First ScotRail]

fsr uses the protective covering on basically all their units so you see very little etching.

 

[scotsman]

Had warning notices up until recently in the Strathspey's Brake vans about HF - although someone needs to teach them a bit of chemistry; the note reads "[HF] cannot be neutralised"

Well, since strange6 has pointed out that it was a relatively high pH (for an acid) - it would not take huge amounts of water to raise the OH concentration to bring it to pH 7 (feel free to correct, I have a Chemistry exam in 6 weeks and I'd like to know if I'm ok with acids or not!)

 

[BestWestern]

Makes you wonder, what do these knuckleheads carry their acid around in if it's so corrosive?!

 

[obrut165]

As previously stated, there is a very prolific individual in the Bristol area who is responsible for a huge amount of etching on FGW's West DMU stock. Most of the units now bear scars from this moron's efforts. Sadly, FGW is not one of the more proactive TOC's when it comes to removing this rubbish or dealing with the offenders, despite much of it occuring in full view of on-board CCTV cameras. Defect books have even been filled in reporting this damage and suggesting that perhaps somebody might find the time to view the CCTV footage - but sadly all to no avail.

im afraid most of it is in the camera blind spot so he must have done his homework!! We are trying hard to cover his work but dont have enough windows in stock and also painting over it on an fpx at night doesnt dry in time for morning service

 

[BestWestern]

im afraid most of it is in the camera blind spot so he must have done his homework!! We are trying hard to cover his work but dont have enough windows in stock and also painting over it on an fpx at night doesnt dry in time for morning service

What a B*st*rd! Surely the 158 vestibules are covered though? Are we talking replacing windows, or just window film?!

 

[142094]

Makes you wonder, what do these knuckleheads carry their acid around in if it's so corrosive?!

Bingo dabbers apparently are the preferred choice of container.

 

[BestWestern]

Bingo dabbers apparently are the preferred choice of container.

Don't they melt?!!

 

[142094]

The plastic must be resistant, although I have no idea what type of plastic is used to make bingo dabbers!

 

[BestWestern]

Hmm perhaps if there's a transparent variant we could make some windows out of it!!

 

[ian13]

M sure my chemistry teacher said that hf acid propagates the decomposition of calcium in your bones. But won't be used it's self. Meaning it could get rid of your entire bone structure

Chemist here...

Hydrofluoric acid is capable of corroding a vast number of things. It'll eat away at skin, flesh and bone (teeth will linger longest). Without proper face and body protection it'll damage your eyes and lungs just from the vapors. Anything above 50 parts per million in the air is a hazard - requiring careful air monitoring. Storage in oriented high-density polyethylene should be fine (so what plastic drinks bottles are made out of).

 

[BestWestern]

Jeez, nice stuff then. How would these idiots get a hold of it? How incredible that it'll melt just about anything but not cheap plastic!

 

[strange6]

Had warning notices up until recently in the Strathspey's Brake vans about HF - although someone needs to teach them a bit of chemistry; the note reads "[HF] cannot be neutralised"

Well, since strange6 has pointed out that it was a relatively high pH (for an acid) - it would not take huge amounts of water to raise the OH concentration to bring it to pH 7 (feel free to correct, I have a Chemistry exam in 6 weeks and I'd like to know if I'm ok with acids or not!)

I think you'll do just fine! Just learn the basic points of Bronsted-Lowry theory on acids and bases and you'll knock them for six!

 

[scotsman]

I think you'll do just fine! Just learn the basic points of Bronsted-Lowry theory on acids and bases and you'll knock them for six!

Never heard that before! I managed to get 60.5 in my prelim, so hopefully I can get a B (at Scottish Higher level) in the exam...

 

[142094]

HDPE is probably what bingo dabbers are made out of. Not sure the dabber itself, would have thought that would have been attacked by the acid.

 

[scotsman]

HDPE is probably what bingo dabbers are made out of. Not sure the dabber itself, would have thought that would have been attacked by the acid.

It would seem not, since supposedly HF was carried around in dabbers by these eejits

 

[142094]

It would seem not, since supposedly HF was carried around in dabbers by these eejits

Wasn't sure if they were modifying the dabbers in some way. Quite a lot of effort to go to just to deface a train.

 

[scotsman]

Wasn't sure if they were modifying the dabbers in some way. Quite a lot of effort to go to just to deface a train.

Aye, shame I can't remember the rest of the notice - it was issued by the BTP, so it might be on their site?

 

[142094]

Aye, shame I can't remember the rest of the notice - it was issued by the BTP, so it might be on their site?

Wasn't sure if it was something they were sending internally to the railway companies?

 

[scotsman]

Wasn't sure if it was something they were sending internally to the railway companies?

Probably was, not sure how it got into the Guards Vans at the Strathspey though - hardly any notices ever go up in them, if needs to be known it goes on the Special Notices board in the crew room at Boat.