AMT Normal Tools Lite is a free custom vertex normal editing tool that allows you to automatically (or manually) set the vertex normals of a given face to be perpendicular to it's face normal.
This tool is provided for free, so feel free to share it with your friends and co-workers ! :)
The tool works on Maya 2016,2016LT,2016.5,2017 and 2017LT. Windows Only.
For the installation just follow the instructions in the "Instructions.txt" file :)
Polycount thread : https://goo.gl/tioj7W
Youtube Trailer : https://www.youtube.com/watch?v=MmvpnqDKp-o