This page is funnier if you have played a lot of role-playing games. We can be fairly sure the 'fatemaster' didn't want the player to succeed in making a chainsaw. But the player gave a fair explanation of how it would work and made a crazy difficult roll.
Oh, yeah. Tarny's gonna want one of them!
thats cool has hell
Had a kender make one once. Worked great until the first time he used it in combat. That's how the group lost their Tanis look-a like.