I'm not sure I'm understanding what you mean. If I'm getting this right, you'd create a single curve for the groove shape, yes? I'm not sure about the extruding along the curve bit? How would that create the arced cube shape?Originally posted by ckyuk
I don't know how he did it but i would extrude a cube along a curve the same shape as the groove and then duplicate it around an axis in the center of the disc so they are all in the right place. Then use a Boolean operation to subtract the shape from the disc. I'd also do the holes in the same way.