Precision Cutting Although each EgglestonWorks speaker is built almost entirely by hand, the many compound angles incorporated into the cabinet design and the extremely demanding fit of the cabinet frame require that the basic wooden components be cut by automated CNC machinery. The construction is so exacting, in fact, that all pieces must be cut to a tolerance of within four ten-thousands of an inch! The result is a speaker cabinet that is equally impressive on the inside as it is externally.