Ceramic-Fiber Blanket Riser After 1 Winter

[pinhead]

I finally got around to inspecting the inside of the firebox on my "cellar stove."

The body of the batch box is built with heavy red brick and the heat riser is an 8-inch stove pipe with 1-inch-thick ceramic-fiber blanket on the inside, making a 6-inch inside diameter system.

I burned the stove as hot as I possibly could burn it as often as I could in order to test the limits of the design. I loaded it multiple times with well-seasoned Osage Orange which burns so hot as to be a fire hazard in anything but a concrete room.

The short story: After heavy use and abuse of one winter, the ceramic-fiber hasn't visually changed. In fact, small irregularities in the throat which I had assumed would either burn off or blow away haven't gone anywhere which means the material is performing above my expectations.

The only thing I'll need to work on is the clay-sand mix forming the throat of the stove; it has crumbled away in the hottest part of the throat.

Here's a short video:
photos.app.goo.gl/mHZhVJiGcB2MNjfU2
photos.app.goo.gl/mHZhVJiGcB2MNjfU2

[matthewwalker]

Dare ya to chisel the throat back a bit and just wrap it in the same ceramic fiber. Might be able to pin it in place, or capture it, or something.

[pinhead]

Sept 26, 2017 10:36:25 GMT -8 matthewwalker said:

Dare ya to chisel the throat back a bit and just wrap it in the same ceramic fiber. Might be able to pin it in place, or capture it, or something.

One thing I do know, is that the CF blanket will absolutely be torn up if it comes into contact with the wood/fuel.

This is definitely one situation where your CF board is vastly superior.

I should've simply used brick in the back wall.

[matthewwalker]

I could mail you some board scraps and you could use them for the port. Wouldn't take much.

[pinhead]

I might take you up on that offer. Shoot me a PM with the details.