In article , rickman wrote:

not safe to use without checking the materials in use. There are many
products that are specifically intended as contact cleaners which don't
cause these problems.

Bizarrely, there are contact cleaners designed for that which DO
cause problems. A can of RS "Switch cleaner" made a bit of a mess of the
inside of the plastic case of an old radio, by melting the black plastic
into runny black goo.

Cleaned the wave-band switch a treat, but I'm glad it only puddled in
the inside corner, and not so much the outside!

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Mike Brown: mjb[-at-]signal11.org.uk | http://www.signal11.org.uk

Mike wrote:



Bizarrely, there are contact cleaners designed for that which DO
cause problems. A can of RS "Switch cleaner" made a bit of a mess of the
inside of the plastic case of an old radio, by melting the black plastic
into runny black goo.




** This the one?

http://au.rs-online.com/web/p/precis...asers/0180831/

That is a strong grease solvent, meant for mechanical stuff.


FYI:

Here is a spray can with the title:

"Contact Cleaner and Protector"

http://au.rs-online.com/web/p/contact-cleaners/3883814/

Far as I can tell from the data sheets, its WD-40 under another name.


..... Phil

In article ,
Phil Allison wrote:

Bizarrely, there are contact cleaners designed for that which DO
cause problems. A can of RS "Switch cleaner" made a bit of a mess of the
inside of the plastic case of an old radio, by melting the black plastic
into runny black goo.

** This the one?
http://au.rs-online.com/web/p/precis...asers/0180831/
That is a strong grease solvent, meant for mechanical stuff.

Not that one. It was a *lot* of years back, and his since been
used and chucked. A round can with screw-on lid, and internally a
"reversible" aluminium delivery tube, which you rotated 180' and
poked out through a hole in the lid to use it.

Khaki green print on white. No idea what the RS part code was, but
it was "own branded".

But it was definitely a switch cleaner ... it never damaged a switch
or pot, but it didn't agree with that thermoplastic case

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Mike Brown: mjb[-at-]signal11.org.uk | http://www.signal11.org.uk