1865 New Haven Iron Planer

[Rickabilly]

Using a Rotary Table for this sort of thing is exactly what it was designed for, Horizontal mills are far more versatile than most folks give them credit for, In fact the finish you've acheived there is probably better than if you had have used a ball nosed end mill, as the end mills tend to undercut slightly when transitioning fron radius to straight line cutting, this is mainly due to the amount of spring in the tool, Not a whole lot of spring in your form tool.
Best Regards
Rick