I enjoyed some of the review comments on Amazon, paraphrased below:

It comes in a handy carrying case, so you can throw it all away at the same time. 

It would make a nice gift for someone you don't like. 

Blair

On Mon, 8 Apr 2013 08:03:31 -0300, Graham Collins <[log in to unmask]> wrote:

>I had one of those briefly, after being very frustrated with it while 
>trying to splice some fine wires the thing suffered a fatal "accident"...
>
>regards,
>
>Graham Collins
>Senior Process Engineer
>Sunsel Systems
>(902) 444-7867 ext 211
>
>On 4/7/2013 11:23 PM, Blair Hogg wrote:
>> And we also had these as well:
>>
>> http://science.howstuffworks.com/cold-heat.htm
>>
>> I think I have one somewhere, not sure since I don't remember ever using it. Interesting idea, but I don't think it was very practical.
>>
>> Blair
>>