Re: Drill Rod, yes and NO!
Mark Mandell - Gone Round In Jersey
>Don,
A piece of O-1 rod will be harder that your cast iron, of course, but it will still get small nicks or dents. It will not (IMO) reinforce the iron rest if glued on, and might pose a real danger because when the glue breaks (guaranteed to happen), you've now got an uncontrolled piece of steel to get caught in the spinning workpiece and launched at your heart and other vital organs.
Attachment can be safely done, I think, by evenly bronze brazing the rod to the cast piece. Remember, though, that brazing heat (1500* or so) can nicely harden the steel and casting making them quite brittle and subject to fracture. Heat treating will then toughen things up and remove any heat-induced stress in the casting. You can do so in your oven set to 500 for about 3 hours and then cooled slowly, or by "roasting" in the coals of a charcoal BBQ fire and removed when cold.
Mark