Boolean modifier not applying So I was having some issues applying a boolean to a cylinder in another project, and after troubleshooting and come to no solution I decided to see if I could get it to work on a blank project with the cube that spawns in when you open a new project. It still wont apply the boolean modifier. I did try removing doubles and recalculating normals. 



EDIT:
This is the project I am having trouble with. I am trying to use a cylinder to cut a headphone jack hole in the bottom.
I was thinking of using the modifier incorrectly and not selecting my target. The object you want to carve a shape out of needs to have the modifier applied, then the dropper will select the carving object to take the shape out of the one with the modifier on it. Thanks for helping!