Picture of Steering wheel for vintage racer
Here is how my good friend and techshop Jedi Danny Garcia made  a cool steering wheel for a vintaqe style race car we are building at Techshop San Francisco

Step 1: Making the metal blank

Picture of making the metal blank
Here we made the aluminum middle part of the steering wheel with a simple 2 d drawing and cut it out on the water jet.  The only critical dimensions are the bolt holes and shaft diameter hole where it bolts to the steering column.  A little careful measuring goes along way.  It turned out to be a 9 minute cut file for the water jet. 
Nice one!