Use the Modify Feedrate on Arcs dialog to adjust the feed rate on circular moves so you can maintain the surface finish.
To display this dialog, click the Modify Feedrate on Arcs button on the Defaults for Milling dialog, or on the Process Parameters dialog.
The following settings are available:
Modify Feedrate on Arcs — Select to enable PartMaker to modify the feed rates on arcs. If the Maintain feed... options are deselected, PartMaker modifies the feed rates automatically.
Maintain feed on internal arcs above % of linear feed — Select this option to maintain the feed rate on internal arcs if it goes above the specified percentage of the linear feed rate.
Maintain feed on external arcs below % of linear feed — Select this option to maintain the feed rate on external arcs if it goes below the specified percentage of the linear feed rate.