Welding Cast Iron

A piece broke off of my John Deere 14T knotter assembly. Can I weld Cast? I've heard yes and no, so i'm a little confused.
Any help is appreciated!
(If anyone has any John Deere 14T parts they want to sell, that would be good too!)
Thanks!

" The most important thing for you to understand is that electric welding on cast iron is actually the very worst decision you could make to attempt to repair your cracked cast iron part. If you want to make a complete mess of your part, go ahead and arc weld it with nickel rod. Cast iron cannot stretch and withstand the contraction and hardening caused by cast welding with preheating below 1200 deg. F. The brand of welding rod does not make a very big difference. It's the heat that causes the changes to the cast iron itself. Sure the nickel weld is machineable but the cast iron will become as hard as a drill bit or tap and therefore will prevent the proper machining that is often required. 50% of the casting repairs we see have been arc welded on with disastrous results often costing the owner at least twice as much to repair properly."

george

• cast iron welding

Rod

• Hobby farm

Thanks to all for the replies, very informative.

• Hobby farm

old,

e-mail sent again. I hope it got through this time.

• Welding nodular iron