Developed by Spline Dynamics, Spline Refiner is a 3dsMax script to automatically subdivide your entire splines uniformly without losing any detail!
– Equalize Subdivision: automatic / custom value / curves only.
– Increase subdivision / Optimize straight lines
– Process hundreds of shapes in seconds
– Compatible with 3dsMax 2012 and higher
Here’s all the info: http://www.splinedynamics.com/spline-refiner/