I'm going from memory here; We've had stoves with the fine cracks I think you're talking about. They were all the way through the cast iron. I don't believe there was a "fix" to the cracks. It was something to do with the properties of the cast iron from being heated / cooled for so many years. However, I don't see why you couldn't cosmedically cover the cracks, and line the inside of the fire pot with refractory cement. I know we've never lined our fireboxes. Not sure if we've tried any cosmedic covering, or not. I do remember looking into a fix for those fine (vertical, if I'm not mistaking) cracks. We also burned wood, not coal. Oliver
Last edited by oliver power
on Sun Mar 03, 2013 4:59 am, edited 1 time in total.