In addition to the outer ceramic shell there is draft opening to provide air to the ceramic firebox in the base of the unit.

One of the ceramic shells ploughed up the ground not a dozen rods from the freighter.

Nothing happened, but the engineer had the feeling that somehow the ceramic composite shell had fragmented before it reached the target.

In direct casting, a ceramic shell encases the object itself, which is burned away in a furnace.

When he felt cold, as now, he seemed to shrink within the ceramic shell.

In addition to the outer ceramic shell there is a ceramic or stainless steel bowl inside the unit to hold the charcoal.

Now all that remains of the original artwork is the negative space, formerly occupied by the wax, inside the hardened ceramic shell.

The ceramic shell is allowed to cool, then is tested to see if water will flow through the feeder and vent tubes as necessary.

During the next step, investment, a heavy ceramic shell is built up over the wax.

The sculpture takes shape when molten bronze, heated to more than 1,900 degrees, is poured into the ceramic shell.