The app provides a new way of easily printing models designed in Revit. Just open the model you want to print and hit the ‘3D Printing App’ button. The whole file will be printed. You can find the 3D print button under in the Application menu ->Publish -> ‘3D Printing App’ & Under the ‘Add-ins’ tab (3D Printing App)

The installer that ran when you downloaded this plug-in from Autodesk App Store has already installed the plug-in. You may need to restart the Autodesk product to activate the plug-in. To uninstall this plug-in, click Control Panel > Programs > Programs and Features (Windows 7/8/8.1/10) or Control Panel > Add or Remove Programs (Windows XP), and uninstall as you would any other application from your system.