Hello I think I have found a good way to put screw eyes in a cast mold but I don't think it will work because of the threads on the screw eyes... I was going to jb weld a nut on to the end of a screw eye and then cast it into a mold but I don't think the threads are the same.and I was thinking about using something like the second pic but I don't know if they make them that small. Any ideas? or am I over thinking it I don't want my eyes to fall out haha.