1. Profile Tools Tool Bar¿¡¼ Circle ¾ÆÀÌÄÜÀ» ¼±ÅÃÇÑ´Ù.
2. Circle ÀÇ Center¸¦ Âü°í Á÷¼±ÀÇ ³¡Á¡À» ¼±ÅÃÇÑ´Ù.
3. Constraint Tools Tool BarÀÇ Constraint ¾ÆÀÌÄÜÀ» ÀÌ¿ëÇÏ¿© R1650ÀÎ Radius Ä¡¼ö¸¦ ÀÔ·ÂÇÑ´Ù.