I made a few hawks awhile ago, and want to make a few again...I used whatever I had laying around but want to actually order some steel this time and need some input from you guys on diameter of steel...I want to do a few in square stock and a few in round stock. What diameter round and square should I get for a medium sized hawk? I hot cut the hole and use a drift for the handle opening if this helps determining size! Also, any suggestions on decent steel that is workable? I think I used 5160 in the past, but I dont see it offered...so whatever is decent, feel free to recommend.