2
When the flue is too narrow, or otherwise, too fine, the pipe will always speak 'dry and thin.'
If the flue is too wide, the pipe whistles, it won't speak clearly, thus it is necessary to have a correct
opening.
Be careful not to cut up the pipe too high, or you will spoil it.
If the pipe quivers, the upper lip is too far out, or the walls aren't thick enough.
If the sound is too weak, it's not getting enough wind, or the flue is too narrow.
If it whistles, that comes from the flue not being equal from one end to the other, or that it is too wide.
If it fluctuates, it may be from too much sound, or that the mouth is not regular, or that the pipe is too
slender or that there is irregularity in its thickness.
A pipe may not have any of these defaults, and still have a thin, dry sound without depth and harmonies.
* * *
