KiwiNZ:Geektastic:
What sort of sharpness test do you propose for knives to determine whether they can be allowed on board or not?
Simple if it can cut paper then it's not allowed. I struggle to find a logical reason why anyone would need to carry a knife onto an aircraft. The rules are well known if it is vital you take it with you either courier it to your destination as I have done or put it in the stowed luggage.
Would we then need to ban the carrying of whetstones or mini ceramic sharpeners (both not triggerable by metal detector) so people wont resharpen them onboard ? What about a stab test ? it may not cut paper, but it can certainly puncture things.