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Tramming
Tramming is the process of adjusting a CNC Spindle (Router) so it is
perpendicular to the spoilboard. The simplest method to do this is to
use a square as shown. If the Spindle is not perpendicular, the
Evolution Series CNC Routers can be trammed on the X axis by
adjusting the four Eccentric Spacers on the Z Carriage.