On 23/07/2012 12:50 PM, Le_Forgeron wrote:

> You do not have to open the disc: put the whole boxed disc inside the
> boiling acid and let it work. The metal goes away (including a clean
> PCB: no more tracks...)
> The engines are deleted as well, and the springs, and the heads...

We actually /have/ a fume cupboard in the lab. And several litres of 
laboratory-grade hydrochloric acid. And a heater.

Holy cow, you probably should not have told me about this...   ._.

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