[cdmckay]

Haha I was thinking the same when I read he hand filed it

[rbanffy]

As it is with any box, there is only so much material you can remove from the corners before it disintegrates into disconnected surfaces.

[mikey_p]

Filing vs. CNC doesn't make one bit of difference.

[rbanffy]

With a CNC you can make sure you'll get a uniform curvature.

[mikey_p]

You can get uniform curvature when filing. Ever hear of filing buttons? Or checking your work with a radius tool until you are in compliance? Stop talking about what filing can't do if you don't know anything about filing.