◦ Rounds with a Circular cross-sectional shape:

▪ Radius box—Controls the radius distance. Available only for Constant rounds.

▪ Radius Reference collector—Sets a distance reference for the radius. Available if you snap a handle to a reference or select Reference from the Distance box on the Sets tab.

◦ Rounds with a Conic cross-sectional shape:

▪ Conic Parameter box—Controls sharpness.

▪ Conic Distance box—Controls conic distance. This box is not available for D1 x D2 Conic rounds.

▪ Conic Distance collectors—Sets a distance reference for the radius. Available if you snap a handle to a reference or select Reference from the Distance box under the Radius table on the Sets tab.

◦ Rounds with a C2 Continuous or D1xD2 C2 cross-sectional shape:

▪ C2 Shape Factor—Controls sharpness.

▪ Conic distance box—Controls conic distance. When you select D1 x D2 C2, there are two conic distance boxes on the Round tab.

◦ Capped check box—Creates end surfaces to cap the gaps between the transition and part geometry. This check box is available only if you select all of the following: a transition type other than Default, valid geometry, and the Surface or New quilt attachment types from the Options tab.

◦ Corner Sphere Transition

▪ R—Sets the sphere radius.

▪ L1, L2, L3—Sets the length value for each side.

◦ Patch Transition

▪ Optional surface—Places a fillet.

▪ Radius—Sets a fillet radius.

◦ Stop Transition

▪ Stop at Reference—Ends the transition at a reference.

▪ Stop reference collector—Displays a stop option:

▪ Point—At a plane that passes through the point and is normal to the stop reference edge.

▪ Isolines—At a plane that passes through isoline normal to the round surface.

◦ Intersect at Surface - side 1 and Intersect at Surface - side 2 Transition

▪ Surface of intersection—Select a plane, surface, or quilt to define the round set intersection.

▪ One side—Creates a transition on one side of the parting surface. When this option is selected, type a transition length in the L box on the Round tab.

▪ Two sides—Creates a transition on both sides of the parting surface. When this option is selected, set the following parameters:

▪ D—Sets the conic distance value.

▪ L—Sets the length value.

◦ Set list—Displays all round sets for the current round feature

◦ Cross section shape list—Defines the cross-sectional shape for the active round set.

◦ Parameter box—Sets the sharpness of a Conic or C2 round. The default value is 0.50.

◦ Creation method list:

▪ Rolling Ball—Creates round by rolling a spherical ball along the surfaces to which it would naturally stay tangent.

▪ Normal to spine—Creates a round by sweeping an arc or conic cross section normal to a specified spine.

▪ Spine collector—Displays the spine reference for Normal to spine round sets.

◦ Extend Surfaces—Expands a round on extensions of contact surfaces. Available only for edge rounds.

◦ Full Round—Converts the active round set to a Full round or allows a third surface to drive a surface-to-surface Full round. Available only if you select valid Full round references and both the Circular cross-sectional shape and the Rolling Ball creation method.

▪ Driving surface collector—Displays the surface to be replaced by a Full round.

◦ Through curve—Allows the radius of the active round to be driven by a selected curve. Available only if you select valid round references and both the Circular cross-sectional shape and the Rolling Ball creation method. Displays the Driving curve collector.

▪ Driving curve collector—Displays the curve that drives the round radius when Through curve is selected.

◦ Chordal—Creates a round with a constant chordal length.

◦ References collector—Contains the set references.

▪ Details—Opens the Chain dialog box.

◦ Radius table—Defines the distance and location of the radius for the round set:

▪ #—Lists the number of radii for the set.

▪ Radius column—Sets the distance of each radius for the set. This column contains values and references.

▪ Location column—Defines the placement of each radius for a Variable round set. This column contains ratios and references.

▪ D column—Controls the conic distance of each radius for the active Conic round set. This column contains values and references.

▪ D1 and D2 columns—Controls the conic distance of each radius for the active D1 x D2 Conic round set. These columns contain values and references.

◦ Distance box—Sets the radius distance using a Value or a Reference.

◦ Location box—Sets the radius placement using a Ratio or a Reference.

◦ Transitions—Lists all user-defined transitions for the round feature.

◦ Stop references collector—Displays a datum point or plane that serves as the stop reference for the transition.

◦ Optional surface—Places a fillet for the Patch transition.

◦ Surface of intersection collector—Displays an intersection surface where rounds meet.

◦ Transition Span—Applies the Intersect at Surface transition to One side or Two sides of the intersection surface.

◦ Sets list—Lists all of the round sets for the entire round feature.

◦ Pieces list—Lists all of the pieces in the selected set and indicates whether they are Included, Excluded, or Edited.

◦ Attachment—Sets the geometry type for the round.

▪ Solid—Makes the round a solid that intersects the existing geometry. Available only for solid round set references.

▪ Surface—Makes the round a surface that does not intersect the existing geometry. Available only for solid round set references.

▪ Same quilt—Makes the round a surface that is merged with the reference quilt. Available only for surface round set references.

▪ New quilt—Makes the round new quilt. Available only for surface round set references.

▪ Create end surfaces—Makes the end surfaces cap the ends of all of the piece ends in the feature. Available when Surface or New quilt is selected.

◦ Name box—Sets a name for a feature.

• Round Edges—Opens the Round tab.

• References—Activates the References collector.

• Location Reference—Activates the Location collector so you can select a point or vertex for a radius location.

• Driving Curve—Activates the Driving curve collector when Through curve is selected.

• Clear—Clears the active collector.

• Show transitions—Activates Transition mode.

• Add set—Adds a new round set.

• Back to sets—Activates the Set mode when Transition mode is active.

• Make constant—Converts a variable round to a constant round.

• Make variable—Converts a constant round to a variable round.

• Extend Surfaces—Expands a round on extensions of contact surfaces. Available only for edge rounds.

• Full round—Converts the active round set to a Full round or allows a third surface to drive a surface-to-surface Full round. Available only if you select valid Full round references and both the Circular cross-sectional shape and the Rolling Ball creation method.

• Through curve—Allows the radius of the active round to be driven by a selected curve. Available only if you select valid round references and both the Circular cross-sectional shape and the Rolling Ball creation method.

• Chordal—Creates a round with a constant chordal length.

• Add radius—Copies the radius and its value and places the radius at both ends of the round pieces.

• Add radius—Copies the radius and its value and places the radius at both ends of the round pieces.

• Delete—Deletes the selected radius.

• Make Constant—Converts the active round set from Variable to Constant.