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Hello again everyone. I went ahead and got the refractory cement that was rated at 3000F for $5. I brushed, dabbed, and smoothed out my first coat. It is curing in the oven right now at 500F. I'm going to see what an hour does to it. I moistened the ceramic insulation first before I applied the cement. I read this is benefitial to help keep the fibers down and let the cement make a better connection. I will check on the forge in an hour and see if it will handle a second coat yet. Is it best to shut off the oven and let the cement cool down inside the oven gradually? I don't want to pull it out and ruin the process.