Based on the answers provided, here are the corrections needed for the 3D object:

1. Create a hole that runs completely through the object along the Y-axis. This will make the object resemble a pipe and satisfy the requirement of having a hole running through it along the Y-axis.

2. Ensure that the hole created by the smaller square is centered at the same point as the original square. This will clarify the positioning of the smaller square relative to the original square.