wrote: (clip) Was thinking about somehow attaching
some HSS rod, which I already have, to the top edge, don't know, can be
welded? What is the hardness comparison of cast iron to cold rolled steel?
(clip)
^^^^^^^^^^^^^^
It's pretty easy to tack weld steel to cast iron, using nickel rod. I don't
have the numbers, but your HSS will be very much harder than the cast iron.
It will not nick easily. You may not have to file it any more. But, if it
ever does get nicked, the filing will be much more difficult.