ORIGINAL: crash bandicoute
but if don't hold it just right and very firm, it kind of does it's own thing with the cuts.
It's worth noting that you should also buy the little $4 [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXPU13&P=M]red plastic guide [/link] to help keep the slots in line