Speed cameras wrecked in Hawaii
Discussion

"Hawaii has scaled back plans to introduce speed cameras after motorists vandalised equipment and threw rubbish at operators during a pilot scheme.
When the island's first speed traps were installed last month, drivers showed their outrage by directing abuse and obscene gestures at staff who operated the cameras from unmarked vans. Newspapers launched campaigns encouraging people not to pay their fines as the number of speeding tickets doubled, and morning radio shows gave regular updates on where the vans were located.
Drivers complained that the speed cameras smacked of George Orwell's "Big Brother"."

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However, I hear that foam insulation is rather good..
Hypothetically speaking, where would one insert the foam? (i.e. is there a suitable orifice)
I've got a can of that stuff in the garage - hope someone doesn't nick it and get any ideas ...
A suitable drainage hole would, hypothetically, be quite good. There are a few.. if not, the metal is not terribly thick either, and a nail+club hammer would make a hole suitable for the nozzle.
The TufTuf club has some useful pointers.

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