G,day all I live in tassie , have been smithing for a few years now my passion is blades but will avago at anything that needs heat and a hammer.
cheers , phil
When welding castiron it should be pre heated only so you can hold your hand against without burning , next is to weld in short lengths about 1 " at a time and peening the weld until cooled welding starts when you can hold your hand against it again and to finish with pre heat whole job and cool slowly , hope this helps