Hello, this may be off topic from the norm here but, I'm curious about making a sculpture that will incorporate a sword in it's design that will be using a leaf spring from an automobile's rear suspension and a connecting rod from the cars engine. The spring is steel and the connecting rod is forged and not cast. What problems am I going to have when attempting to join these two items? I'm thinking that they will have to be brazed but am not sure since the connecting rod isn't cast iron. Any help or input would be appreciated.

Cheers!

-Marshall