"3. The CMM program must include checking the flatness of each individual raw casting datum surface if the datum pad is intended to be a flat surface. Preferably less than 0.250mm.
4. Point cloud/laser scanning inspection must use the part-design datum construction to align the measurement data. Unless otherwise specified by the customer, ""best-fit"" data alignment is not allowed.
5. The casting plant is responsible for comparing the scan with the 3D Math Model. In all cases the Point Cloud/laser scan must be aligned to the math model using the X-Y-Z raw casting datum surfaces. Results must be shared with customer Product Engineering and the responsible APQP Quality Engineer. 6. Point Cloud/laser scanning Inspection is recommended for prototype parts and PPAP parts as defined by the customer specific requirements. The scanning may be out-sourced."