DIY Ceramic Blanket Rigidizer

In order to seal in the dangerous fibers of the ceramic blanket and to add a hard wearing surface, I coated the blanket with a homemade rigidizer. It is made with roughly equal parts in volume of furnace cement and aluminum oxide:

Equal parts by volume of furnace cement and aluminum oxide.
Equal parts by volume of furnace cement and aluminum oxide.

I then add just enough sodium silicate to give it a smooth paste like consistency:

To bind it together, just enough sodium silicate to give it a paste like consistency is mixed in.
To bind it together, just enough sodium silicate to give it a paste like consistency is mixed in.

To apply it, I simply used a dollar store paint brush. Apply a thin coat and let it dry a couple hours between coats. Four coats seems to make a good rigid surface.

To cure it, a small fire will need to be built. It is important to slowly bring the temperature up to prevent bubbles from forming. When it is cured, it forms a hard wearing, durable surface.

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