"Invisible" <voi### [at] devnull> wrote in message 
news:49369337@news.povray.org...
>>> Right. And after you've used the knife trice, it'll be blunt. :-P
>
>> Not if it's good steel. You can always sharpen it again too :P
>
> Right. And how exactly do you sharpen a knife? :-P

You take it to a shop that offers sharpening services and ask them to do it.

If your knife blunts after cutting paper, it's a very poor quality knife.

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