At first he would make a metal pole. Adjusted to his height and weight. He would create swords that was swords in shape mostly, and knives and daggers to throw. Everywhere he touched that he would turn to metal had large chunks missing, and piles reformed into debris from the place that he touched. He looked online for some pole techniques and then found an old cartoon of TMNT and saw the turtle Donatello use his staff and procrastinated his way into binge watching 3 seasons of the show.