Tiêu đề G0704 King KC-20VS-2 BF20 núm thanh kéo máy nghiền nhân b

Once you loosen the R8 drawbar, it's fiddly to get the 8mm wrench on there before it releases the tool holder. Pop this on and spin it. Print it once or twice to nail the internal square diameter, then print it solid. My printer is well calibrated and it printed fine first try.