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Looking for "penknife and pencil" tutorial

Question asked by Luca Reggiani on Jan 23, 2013
Latest reply on Jan 23, 2013 by Luca Reggiani


Some time ago I found on the net or here in the forum, a cool tutorial to simulate a penknife and a pencil.



In thet simulation you could see the pencil that was rotated into the penknife

and little by little the pencil became shorter and shorter.


I remember that in this instance there were the video and the files that helped you understand the trick:


Can you tell me where I can find that tutorial?