public MachiningParameters(WaterJet wj, Abrasive abr, MachiningOpType op, double sod)
 {
     Abrasive    = abr;
     Waterjet    = wj;
     MachiningOp = op;
     SOD         = sod;
 }
 public MachiningParameters()
 {
     Abrasive    = new Abrasive();
     Waterjet    = new WaterJet();
     MachiningOp = MachiningOpType.Unknown;
     SOD         = 0;
 }