I was watching some videos of the old guys on youtube whittling and I think it'd be fun to try. Does anyone here whittle? Can anyone provide some recommendations for a good knife? I guess what I mean is, do you need a specific sort of knife or will any knife do? I have a Case knife, but I would be worried about screwing it up somehow. How about something disposable like an Xacto knife? Any input or a point in the right direction is appreciated!