I tried without success to replace broken firebrick for my King wood/coal stove. I ended up taking the broken ones out at the end of the season and patching them together with furnace cement and putting them back in once they had set up.
No worries.
I have the King Wood/Coal circulator. It has never burned coal well for me. It just never developed any heat to speak of. I have been burning wood in it for about 22 years and it works well. I like the ash pan and use the shaker grates to keep the draft going. I have patched the fire brick many...