About this 3D model

This guy is really awesome! He made a Paper Revolver (not shootable): http://www.youtube.com/watch?v=glunwzbGyKM I'm trying to make this cool stuff in pro/e and convert it into stl format The first part I've made is the Hammer~ wish you guys like it ! Since it is a simple extrusion, I'll also upload the sketch file, you guys can easily modify it~ Next, I'm going to working on the trigger.