When twisting square stock and it comes out with that funky kink in it, rather than hit it with your regular forging hammer you might try a lead hammer...it doesnt ding up your fancy twists and is actually heavy enuf to drive tent pegs if needed. I cast my own out of old wheel weights in a soup can and punched a hole in the side for a piece of pipe. I had all the weights given to me to use in my blackpowder guns but only use pure lead for that. the hardest part was tearing the can off of the hammer after it cooled but perseverance conquered that obstacle....eventually..LOL. a note on safety about lead melting...please do it outside so that you dont get heavy metal poisoning.
Now git out there and make some noise...