Inventor help: split a solid

[JD Mather]

Originally Posted by BeltSanderRocks

Try this: Instead of using the "Split Solid" Feature...

This doesn't answer the question or solve the problem.
The problem has already been better defined in that the visual of the plane is just that - the plane actually extends to infinity (or as far as the computer can calculate) in all directions. This is true in Inventor or SolidWorks.

The easiest solution (in SolidWorks or Inventor) is to create a U shaped sketch on the perpendicular plane and use that to split the part.

Alternatively extruded rectangles with Cut option can achieve the same results.

Attach the ipt file here if you can't figure it out.