I will be using a 30lb sledge head for that till I can get something chunkier and yes I will read the info you suggested thanks for the reply
Oh sorry I am based in UK, I have scoured local junk yards for suitable chunks and nothing in steel of suitable thickness/mass. I have found anvils but only for silly money I will find something bigger eventually but hoped I could recycle what I had found! I am a sucker for mystery steel which I gather is a bit of a no-no but I have saved some lovely steel from being buried not recycled. The project before the chisel that broke the anvil was a knife made from 1" bunker rebar again saved from burial and it's a lovely workhorse.
Good shout though I have read info on forklift tines,backhoes etc and will grab anything of that nature if I find it and put it to work!