I’ve got a atlas 10” and I 3D printed a lock for my bull gear as well as a cover for my spindle when it doesn’t have a chuck or backing plate on it…above is the first time I’ve seen the ones that go into the chucks so I guess I’ll be firing up the 3D printer to make a few of those as well…your Logan appears to be the same as some of the atlas’s…I could print you a lock and ship it to you if it would help to not tear up a nice piece of equipment…