Swept volume feature cannot be created

Hello,

I'm trying to use swept volume feature on the outside of a cylindrical part (not tapered).

I've created a revolved triangle as for the tool body. This body intersects the cylindrical part (bootlean set to none). I've created a helix for the path. The helix has the same diameter as the cylindrical part. The helix is constant in pitch.

Now when I'm trying to do a swept volume, the message that appears is: "Swept volume feature cannot be created". Any thoughts on what I'm doing wrong? The message doesn't provide much help.

Thanks in advance.