Use the Multiple cuts page to allow multiple passes down the tool axis.
Mode —Select a mode to determine how the multiple passes are created.
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Off — Select to create a single toolpath.

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Offset down — Select to offset the top cutting path, moving down.

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Offset up — Select to offset the bottom cutting path, moving up.

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Merge — Select to offset the top and bottom cutting path, merging from one to the other.

Order by — Select whether machining takes place by Region or by Level.
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Region — When selected, one region (such as a pocket or boss) is completely machined before going on to the next. So, pockets are machined in preference to levels.

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Level —When selected, one level is completely machined before going down to the next. So, levels are machined in preference to pockets.

Maximum stepdown — Enter the maximum distance between successive passes.