A multi-part square baler produces multi-part bales that each include two smaller single bales. The baler includes a double knotter configured to tie first and second four string knots that connect the ends of a multi-bale top-string and a multi-bale cincture string encompassing the two small single bales. The double knotter is also configured to tie a two-string knot on the strings encompassing the first small bale and another two-string knot on the strings encompassing the second small bale. The strings encompassing each of the small single bales are also tied into a respective one of the two four-string knots.