In this tutorial we will learn how to utilize Qt Designer for creating custom UIs. We will discover the awesome art of using Qt Designer along with Python, PyQt4 and MEL scripting to create custom UIs within Maya. We will go over the use of Qt Designer along with using Python to connect everything together. Some scripting knowledge is useful, but not necessarily needed. Everything is provided within this tutorial along with project files and scripts. Software required: Maya 2012 64-bit, Qt Designer, Python 2.6, PyQt4.