hi ,i need some help programming an eztrak to mill an arc in the xz direction, im trying to mill a 3"radius 3" deep in a block of D2 USING A .6875 ball endmill , i can get it to travel with radius in correct direction .my block is 6 " wide with 0,0 in the center of part. if i can program1 line i will repeat it as many times as needed to get across

my part looks like this .

thanks
robert brintle