PartDesign Pad: Difference between revisions

Revision as of 01:30, 1 August 2014

Menu location
PartDesign Pad
PartDesign → Pad
Workbenches
PartDesign, Complete
Default shortcut
None
Introduced in version
-
See also
None

Description

The Pad tool takes a selected sketch as its input and from it produces a "pad" feature. A pad is essentially an extrusion of a sketch into a solid. For example, if a sketch were made of two concentric circles, and the pad tool were subsequently used on this sketch, the result would be a cylinder:

If the selected sketch is mapped to the face of an existing solid or another Part Design feature, the pad will be fused to it.

How to use

Select the sketch to be padded.
Press the Pad button.
Set the Pad parameters (see next section).
Click OK.

Options

When creating a pad, the Combo view automatically switches to the Tasks pane, showing the Pad parameters dialogue.

Type

Type offers five different ways of specifying the length to which the pad will be extruded.

Dimension

Enter a numeric value for the length of the pad. The default direction for extrusion is away (outside of) the support, but it can be changed by ticking the Reversed option. Extrusions occur normal to the defining sketch plane. With the option Symmetric to plane the pad will extend half of the given length to either side of the sketch plane. Negative dimensions are not possible. Use the Reversed option instead.

Two dimensions

This allows to enter a second length in which the pad should extend in the opposite direction (into the support). Again can be changed by ticking the Reversed option.

To last

The pad will extrude up to the last face of the support in the extrusion direction. If there is no support, an error message will appear.

To first

The pad will extrude up to the first face of the support in the extrusion direction. If there is no support, an error message will appear.

Up to face

The pad will extrude up to a face in the support that can be chosen by clicking on it. If there is no support, no selections will be accepted.

Length

Defines the length of the pad. Multiple units can be used independently of the user's units preferences (m, cm, mm, nm, ft or ', in or ").

Symmetric to plane

Tick the checkbox to extend half of the given length to either side of the sketch plane.

Reversed

Reverses the direction of the pad.

Limitations

Like all Part Design features, Pad creates a solid, thus the sketch must include a closed profile or it will fail. There can be multiple enclosed profiles inside a larger one, provided none intersect each other (for example, a rectangle with two circles inside it).
The algorithm used for To First and To Last is:
- Create a line through the centre of gravity of the sketch
- Find all faces of the support cut by this line
- Choose the face where the intersection point is nearest/furthest from the sketch
This means that the face that is found might not always be what you expected. If you run into this problem, use the Up to face type instead, and pick the face you want.
For the very special case of extrusion to a concave surface, where the sketch is larger than this surface, extrusion will fail. This is a unresolved bug.
There is no automatic cleanup, e.g. of adjacent planar surfaces into a single surface. You can fix this manually in the Part workbench with Refine shape (which creates an unlinked, non-parametric solid) or with the "Refine shape feature" (which creates a parametric feature) from the OpenSCAD Workbench.

Other languages:

@@ Line 1: / Line 1: @@
 <translate>
-<!--T:19-->
 {{GuiCommand|Name=PartDesign Pad|Workbenches=[[PartDesign Workbench|PartDesign]], Complete|MenuLocation=PartDesign → Pad}}
+==Description==
-==Introduction== <!--T:1-->
+The '''Pad''' tool takes a selected sketch as its input and from it produces a "pad" feature. A pad is essentially an extrusion of a sketch into a solid. For example, if a sketch were made of two concentric circles, and the pad tool were subsequently used on this sketch, the result would be a cylinder:
-'Pad a selected sketch' - This tool takes a selected sketch as its input (the 'defining sketch'), and produces with it a 'pad'.
+</translate>
-A pad is essentially an extrusion of a sketch. For example, if a sketch were made of two concentric circles, and the pad tool were subsequently used on this sketch, the result would be a cylinder:
 [[Image:Pad_cylinder.png|left]]
 {{clear}}
+<translate>
+If the selected sketch is mapped to the face of an existing solid or another Part Design feature, the pad will be fused to it.
+==How to use==
+# Select the sketch to be padded.
+# Press the {{KEY|[[Image:PartDesign_Pad.png|16px]] '''Pad'''}} button.
+# Set the Pad parameters (see next section).
+# Click OK.
 ==Options==
-When creating a pad, the 'pad parameters' dialogue offers five different ways of specifying the length to which the pad will be extruded
+When creating a pad, the Combo view automatically switches to the Tasks pane, showing the '''Pad parameters''' dialogue.
+[[Image:pad_parameters_cropped.png|frame|left]]
-<!--T:22-->
-[[Image:pad_parameters_cropped.png|left]]
-===Dimension=== <!--T:20-->
+===Type===
+Type offers five different ways of specifying the length to which the pad will be extruded.
-Enter a numeric value for the length of the pad. The default direction for extrusion is away (outside of) the support, but it can be changed by ticking the '''Reversed''' option. Extrusions occur [http://en.wikipedia.org/wiki/Surface_normal normal] to the defining sketch plane.
+====Dimension====
-With the option '''Symmetric to plane''' the pad will extend half of the given length to either side of the sketch plane.
+Enter a numeric value for the length of the pad. The default direction for extrusion is away (outside of) the support, but it can be changed by ticking the '''Reversed''' option. Extrusions occur [http://en.wikipedia.org/wiki/Surface_normal normal] to the defining sketch plane. With the option '''Symmetric to plane''' the pad will extend half of the given length to either side of the sketch plane. Negative dimensions are not possible. Use the '''Reversed''' option instead.
-Negative dimensions are not possible. Use the '''Reversed''' option instead.
-===Two dimensions===
+====Two dimensions====
 This allows to enter a second length in which the pad should extend in the opposite direction (into the support). Again can be changed by ticking the '''Reversed''' option.
-===To last===
+====To last====
 The pad will extrude up to the last face of the support in the extrusion direction. If there is no support, an error message will appear.
-===To first===
+====To first====
 The pad will extrude up to the first face of the support in the extrusion direction.  If there is no support, an error message will appear.
-===Up to face===
+====Up to face====
 The pad will extrude up to a face in the support that can be chosen by clicking on it. If there is no support, no selections will be accepted.
-|}
+===Length===
-==Limitations== <!--T:21-->
+Defines the length of the pad. Multiple units can be used independently of the user's units preferences (m, cm, mm, nm, ft or ', in or ").
+=== Symmetric to plane===
+Tick the checkbox to extend half of the given length to either side of the sketch plane.
+=== Reversed ===
+Reverses the direction of the pad.
+==Limitations==
+* Like all Part Design features, Pad creates a solid, thus the sketch must include a closed profile or it will fail. There can be multiple enclosed profiles inside a larger one, provided none intersect each other (for example, a rectangle with two circles inside it).
 * The algorithm used for '''To First''' and '''To Last''' is:
 ** Create a line through the centre of gravity of the sketch
@@ Line 36: / Line 52: @@
 * This means that the face that is found might not always be what you expected. If you run into this problem, use the '''Up to face''' type instead, and pick the face you want.
 * For the very special case of extrusion to a concave surface, where the sketch is larger than this surface, extrusion will fail. This is a unresolved bug.
-* There is no automatic cleanup, e.g. of adjacent planar surfaces into a single surface. You can fix this manually in the Part workbench with '''Refine shape'''.
+* There is no automatic cleanup, e.g. of adjacent planar surfaces into a single surface. You can fix this manually in the Part workbench with '''Refine shape''' (which creates an unlinked, non-parametric solid) or with the "Refine shape feature" (which creates a parametric feature) from the [[OpenSCAD Workbench]].
 </translate>
 {{clear}}