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Equation Curve, B-spline and Nurb

Question asked by Frederick Law on Aug 7, 2020
Latest reply on Aug 8, 2020 by Wayne Matus

We are quoting a off center parabolic reflector.

Customer supplied a equation.  We need to machine to "surface error to be within 25 micron (meter?) RMS".

"Surface roughness to be less than 3.2 micron"

If I model the curve and revolve it to cut the surface, would the surface still 100% follow the equation?

What happen when I export it to STEP, Parasolid for MasterCAM?

How much deviation, if any, between the equation and exported surface?