Optitex is a professional 2D/3D CAD software for apparel design, pattern making, grading, and marker making. Official tutorial PDFs are designed to help users learn the software’s core modules: , 3D Simulation , Marker Making , and Nesting .
You must fix the base point of the curve. Use the Lock tool on the lowest point of the hem. If no point is locked, Optitex doesn't know where to grade from . optitex tutorial pdf