====== 3d Printed Followfocus Gear Rings ====== Since FreeCAD has an involute gear function, it's very easy to design a FF Gear ring with it, here is a quick screencast on how to do it: [[https://archive.org/details/FreeCAD_FollowFocus_GearRing|FF Gear in FreeCAD]] And here the Forum Thread which explains it in more detail: http://forum.freecadweb.org/viewtopic.php?f=3&t=7505