poopdiddly Posted May 29, 2011 Share Posted May 29, 2011 I recently put in a clay lining into my rivet forge. It used clay right out of the ground. I burnished it smooth and I scored a few concentric circles into it. However, it still cracked badly. There has to be over 20 or 25 deep cracks in it that run around the firepot, as well as into the firepot. What should I fill the cracks with? More clay? Or could I use sand or ash? What about lime putty? Thanks! Quote Link to comment Share on other sites More sharing options...
Rob Browne Posted May 29, 2011 Share Posted May 29, 2011 Just fill them again with the clay. Its cheap and easy. Quote Link to comment Share on other sites More sharing options...
Thomas Dean Posted May 30, 2011 Share Posted May 30, 2011 Those cracks are due to the shrinking of the clay as it dried, should cause no problems and most likely the "fines" and ash from you coal will fill them. Or you can do as Rob mentioned and refill with clay. Quote Link to comment Share on other sites More sharing options...
tomhw Posted June 1, 2011 Share Posted June 1, 2011 I recently put in a clay lining into my rivet forge. It used clay right out of the ground. I burnished it smooth and I scored a few concentric circles into it. However, it still cracked badly. There has to be over 20 or 25 deep cracks in it that run around the firepot, as well as into the firepot. What should I fill the cracks with? More clay? Or could I use sand or ash? What about lime putty? Thanks! Clay is cheap and readily available- use it. The problen with clay is that it cracks and that it readily joins with slag and will come out with the clinkers. I have no experience with refractory clays- you might try some of that. Quote Link to comment Share on other sites More sharing options...
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