OK I have some very simple projects. the project is to make a logo on a sign, all i have is a rough drawing of the lines I need to follow, easy enough to draw out until I tried to get a toolpath to follow them, in Mastercam the only options (I see)are to go to the left or right of the line I laid out. How can I get Mastercam to let me make a toolpath down the center of the line without giving me errors like open boundries or open chains, or facing everything except the line?

All I am trying do is have my .750 bull nose endmill follow the line I laid out at a specific depth that I specify. I also am not using the full width of he endmill, just need the radius.