see https://www.academia.utp.ac.pa/sites/default/files/docente/72/material_de_apoyo_para_asignacion_4_ecuacion_de_lazo_cerrado_para_una_leva_de_perfil_circular.pdf formula used: [image: 4h2P_Capture.JPG] did not see your post until today, after a bit of research on cams, (not my field, I'm carpenter and estimator) need only the rotation and the formula does the rest automaton demo.skp