John Junkroski mentioned a plane that uses a razor blade... I believe 
some generous soul donated one similar to Peter McBride, purely for 
laughs. Why yes, here's a picture:

http://www.petermcbride.com/magnum09/img/magnum_058.jpg

I'm pretty sure it hasn't quite made it to the top shelf of Peter's 
collection just yet :-)

Regards, Philip.

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