This part replaces the plastic interlock tab on some models of the Cuisinart food processor. It changes the operation of the food processor to the way it used to be with the older models. That is you can feed food into the large chute while the machine is running. We prefer this in our kitchen even though it is more dangerous. But then we are a safety-third sort of family.
More information at: http://steampunkworkshop.com/cuisinart-interlock-repair
Print this part in ABS plastic with 10% infill three layers top to bottom and sides, use cooling for the vertical fin. Surface treatment in acetone vapor will increase the strength, but is not necessary.