>>11735306An ideal weight for a mace is between one and two kilos, it shouldn't be exceptionally heavy (speed outperforms mass at a certain point when it comes to swinging shit around), and all the weight should be at the head.
Get some weight the likes of which you'd get on a little 2kg dumbbell, pic related, weld a threaded rod to one of the ends it and screw it on to a wooden handle. Real simple ideally weighted bonker.