I have an old cast iron meat grinder and i am looking to attempt to repair some worn out threads. I think i want to turn the old threads off and braze a new cast iron sleeve on and thread it. I am unsure of the type of cast iron that the part is. Does it matter the type of cast iron I use for the repair? Also I would be looking to buy a drop from somewhere. Any ideas where I should look? Thank you all in advance for your replies!