MITS Eleven Auto FPZ-31AT, Command Manual, Page: 73 / 108

72
Step Milling
When you want to mill the
thick material, the
incremental milling is not
suitable for this kind of job.
(The incremental milling means
pressing print circuit board with
pressure foot during milling)
Because the spindle head will always
press the board down and there is a
chance that it might fall into a large
hole which has been routed while
operation.
When you mill thick materials, we adopt “Absolute Milling”. With this method, the material is
not pressed with pressure foot because z axis is controlled numerically.
And also "step milling" function
is effective approach:
Instead of cutting at once, the
same line is traced several times
increasing cutting depth
incrementally.
Using step milling, the prototyping machine can mill plastic and metal. But it is
the different concept of PCB prototyping machine. Don't put overload on the
machine.