aluminum welding was mentioned. you will need to purchase the aluminum gun, miller and lincoln both make one for these. aluminum spool is on the gun as the alloy is too soft to push from the welder, some guns may pull the wire. additionally, you will have to use gas sheilding so the regulator is a must.
it can be done. also note that lincoln and miller produce rod to weld cast iron but the process is specialized. I remember dad attempting it once when he owned a welding shop. i used the rosebud torch to try and keep the cast heated all over so it didn't crack and craze. if you dont have the part heated, stress cracking will happen. after he welded it, we buried it in sand to keep air away and slow coolin. pulled it out after a day.
this is stick welding and if you try to repair a cast iron crack, be certain to drill a hole at each end of the crack to stop it or be prepared to use a lot of rod.
it can be done. also note that lincoln and miller produce rod to weld cast iron but the process is specialized. I remember dad attempting it once when he owned a welding shop. i used the rosebud torch to try and keep the cast heated all over so it didn't crack and craze. if you dont have the part heated, stress cracking will happen. after he welded it, we buried it in sand to keep air away and slow coolin. pulled it out after a day.
this is stick welding and if you try to repair a cast iron crack, be certain to drill a hole at each end of the crack to stop it or be prepared to use a lot of rod.