Having trouble splitting a body

[Lehrer_Account]

Hey guys. I'm pretty new to all this and I'm trying to get some practice in. After creating a few small things I was trying to trisect a cube. It turned out to be a pretty good exercise but now I'm stuck at seemingly the last step. I created spirals to cut into the cube but I get an error: "coincident tools would create illegal or non-manufacturable bodies".

Where did I go wrong and how can I fix this? 

[sutherland-]

Hi @Lehrer_Account 

Please try using "Combine" feature. It sounds crazy, but the this feature also has cutting.

Refer to image below:

P.S. Really nice outcome you have there! Good job!

[TrippyLighting · Accepted solution]

Another tip here to make creating the helix easier.

Use a surface sweep with twist and then thicken the helical surface. Often much easier to control than the dreaded coil feature and it creates cleaner geometry as well.

[Lehrer_Account]

Thank you both for helping out and thanks for the compliment. I ended up having to go with the second solution and the sweep tool. Because with the first option I was unable to move the sections it created around. It stayed as one object with a piece cut out. So in this case the other option was better.