Planmeca FIT CAD System User Manual page 157

Mill notification settings
Milling settings
User's manual
Use Mill Notification Settings to enable or disable the Mill Status on the
laptop.
In Milling Settings you can select Standard (overmill) or Undermill setting.
This settings only affect proposal with a sharp interior, like an anterior
incision edge. If the interior of the proposal is smaller at the tip than the tools
in the mill, the standard setting is for the mill to remove extra material at the
tip.
This may lead to a crown that is too thin at the top. You may round the
preparation or select Undermill. If Undermill is selected, the mill will not
remove all of the interior but only as much as the tool's size will allow.
Remove the remainder manually.
18 Functions in Planmeca Romexis
Planmeca FIT CAD/CAM system 149