[Stoves] Institutional Barrel Stove -- Combustion Chamber Specifications

[jameshensel at comcast.net]

I have reviewed the Aprovecho video for making this stove and the combustion chamber just appears without comment.  Is there someone at Aprovecho who would be willing to either:
1.  add a vido chapter on the making of the combustion chamber; or
2.  provide on the aprovecho website (or here though Tom Miles) construction drawings and more detailed pictures of the combustion chamber.

Thanks,  Jim