very basic question

Cast iron is apparently tricky to weld ( or cut with a torch it seems)

You can weld it with an electrode containing nickel.

Have you thought about putting the grate on a one inch piece of metal? I raised mine using several pieces of old 1" steel joiner plates found along a rail line.

Graham

Welding cast iron is tricky. Regualr steel rod like 6013 or 7018 won't wrok. Brazing is out, your application gets too hot. Nickle rod is good, it still takes some preheat/postheat.

I had the same issue with fireplace grate. I simply tapped the 4 legs for 3/8-16 bolts, screwed > I certainly don't claim to have any expertise at any sort of welding, been

Hard thing to weld, especially when you're going to be heating it up in cycles afterwards.

Make a "tray" of mild steel for it to stand on - just the four legs and a little bracket between them to hold them at the right spacing.

Hi

Cast is tricky cos its the metal equivelant of sausages or kebabs, you dont know whats in it.

Even if you manage to weld it, it can often crack while cooling. Preheat often helps.

I have succesfully welded (with MIG) a broken cast iron leg on a outside cast iron bench, My dad is still using this bench 5 year since. The Technique I Used:-

1. Ground a V along the break, using an angle grinder.
2. Welded using Mig wire in V gap filling as I went along (intermitant mode)
3. Blob by Blob in V, & Paused to cool
4. Allowed to cool naturally.
5. Painted Black. regards S

Cast iron joins well with O/A brazing rod..........

MM^^