In this tutorial I will show you how to create the Eureka Effect, the futuristic engineer wrench from Team Fortress 2. This wrench took me about two weeks to model, and not all of the pieces printed perfectly, but overall it came out pretty well. This is an image from the SolidWorks Photoview 360 add-in, for realistic rendering. It printed in green plastic. It is overall about 3.5 inches long, and is partially functional. I will show you the parts that it took to create this, and the final assembly of all of them.
Step 1: The Head
First you must create the head of the wrench. To do this you must first create a sketch of the round bit. then you must extrude that and then extrude another piece off of the bottom for the slider.