All circle tools
All arc tools
All rectangle tools
Lines
Splines
Points
Spline
on surface is only available in 3D.
Additional tools 3D sketching.
There are differences and similarities between 2D and 3D sketching.
You can use any of the following tools to create 3D sketches.
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Additional tools 3D sketching. |
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You can create 3D sketch entities on a working plane, or at any arbitrary point in 3D space.
To begin a 3D sketch:
Click 3D
Sketch 
(Sketch toolbar) or Insert, 3D Sketch to open a 3D sketch on the
Front plane in Isometric
view.
- or -
Select a plane and then click 3D Sketch on Plane
(Sketch toolbar) or Insert,
3D Sketch on Plane to add a 3D
sketch in Normal to view.
When sketching in 3D, you can snap to the major directions, X, Y, or Z, and constraints are applied Along X, Along Y, and Along Z, respectively. These are constraints to the global coordinate system.
When sketching on a plane, you can snap to the horizontal or vertical directions in the plane, and constraints are applied to the Horizontal and the Vertical. These are constraints to a plane, planar face, etc.
Most relations that are available in 2D sketching are available in 3D sketching. The exceptions are:
Symmetry
Patterns
Offset
You can add planes while in a 3D sketch. 3D plane attributes include:
Define. Planes can be fully defined, over defined and under defined.
Relations
You can add or remove relations to planes.
Use relations to position other geometry or position the plane.
Move. Move planes by dragging, resize planes by dragging the corner handles, and rotate planes using the center handles.
Activate. Double-click to activate a plane.
With 2D sketching, all geometry is projected unto the plane you selected to sketch. Silhouette edges become planar entities, so that from certain angles, fillets and cylinders appear as arcs and lines.
In the sketch below, though you do not view normal to the sketch plane, you can still perceive how the model is projected onto the sketch plane.
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In a 2D sketch, model geometry is projected onto the sketch plane in this manner. |
In the sketch below, the 3D sketch in red (created on one of the edges of the chamfer) is a model edge that is not parallel to the 2D sketch plane. The 2D sketch in red is a projection of the 3D sketch.
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In the 2D sketch, you can sketch a line that is parallel to other lines and add end points that are coincident. However, parallel and coincident refer to the projected edge and not the real edge. The 2D sketch in blue represents this condition. The end of the line is not coincident with the real model edge, nor is the line parallel to it.
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In 3D sketching, there are no such projections. If you add a parallel relation to the red 3D sketch, it is parallel in 3D space.
In 3D sketches with nested contours, you
can select the internal boundaries, but their profiles are not subtracted
from the overall extrusion as is the case in 2D sketches.
When you open a sketch in 3D, you can start the sketch anywhere. This
adds an origin. To use a 2D sketch mode in a 3D sketch, activate a planar
face by adding a 3D
sketch plane. You can also click 3D
Sketch on Plane (Sketch toolbar) or Insert,
3D Sketch on Plane to start sketching
in a 2D mode. This provides some additional benefits:
Inferences. More relations are available, with some restrictions as noted.
Snapping. Only occurs with the geometry in the sketch plane. Exceptions include:
Snap to a curve that passes through a plane and infer coincidence between the sketched point and the curve.
Snap to points off the plane when viewing that plane normal to. This ensures that the point is coincident with the projection onto the plane.
Use the Sketcher
Triad 
to limit the drag of entities.
To display the sketcher triad:
In a 3D sketch, right-click in the graphics area and select Show Sketcher Triad.
You can leave the triad in its default position or drag it to a new position. If you drag the triad onto a surface or curve, its axes are oriented to that geometry.
You can drag the triad in two ways:
Select an axis or the plane on the triad, and then drag geometry. The geometry is then dragged along that axis or in that plane.
Drag the triad onto a point. It locks to that point, and then you can drag the point by dragging on the axis or plane of the triad. While the triad is locked, you can still drag other geometry.
In the Properties PropertyManager, you can hide dimensions, relations or planes.
When sketching in the 2D mode, entities that are not on the active sketch plane are muted.
Relations and dimensions that do not involve the plane or segment on it are hidden.
