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Old 04-30-2013, 04:14 PM
Master Builder
Join Date: Oct 2012
Location: Los Angeles
Posts: 732
Default Re: Steady good heat without the large flames. How?

Originally Posted by david s View Post
Good luck, I've found crack repairs to never be particularly successful. But you'll need to get some moisture back into the crack before attempting a repair. Try making a thin slurry of pure calcium aluminate cement and get it onto the mating surfaces after the water, then fill with your heatstop.

I'm an advocate of curing t he oven after insulation because if the dome is uncovered there is a huge temperature difference between the inside temp and the outside temp which may have bee n the cause of your cracks.
What was the outside ambient temperature at the time you were firing?

Looking at the first photo on this thread it seems as though you have a lot of coinciding vertical joints, this could also be a contributor.

Thanks David, since ive already purchased the Fireplace cement that is meant to fill cracks and repair damages ill use that, it does contain Cal-Sil. At the lower temps of curing the oven was just warm to the touch on the outside, however yesterday it go nice and warm.

You are right some bricks do have coinciding vertical joints.
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