1803B horn plans available?

[Audiomind]

All you really need are the dimensions for a single cell, and a detail of the collector and throat.

I wish it were that easy but it is not a conical profile expanding in a linear fashion, so if you look close at the pics each vane is sort of like an airplane wing.

Don't want to end up with interesting wood for a bond fire.................although that might look pretty cool having bond fire flames shoot out of a multi cell!