Difference between revisions of "PartDesign AdditiveLoft"

From FreeCAD Documentation
Jump to navigation Jump to search
(Select the next sketch in the 3D view)
(Marked this version for translation)
(14 intermediate revisions by 6 users not shown)
Line 1: Line 1:
 
<languages/>
 
<languages/>
 
<translate>
 
<translate>
 +
 
<!--T:17-->
 
<!--T:17-->
 
{{Docnav
 
{{Docnav
 
|[[PartDesign_Revolution|Revolution]]
 
|[[PartDesign_Revolution|Revolution]]
|[[PartDesign AdditivePipe|Additive pipe]]
+
|[[PartDesign_AdditivePipe|Additive pipe]]
 
|[[PartDesign_Workbench|PartDesign]]
 
|[[PartDesign_Workbench|PartDesign]]
 
|IconL=PartDesign_Revolution.svg
 
|IconL=PartDesign_Revolution.svg
 +
|IconR=PartDesign_AdditivePipe.svg
 
|IconC=Workbench_PartDesign.svg
 
|IconC=Workbench_PartDesign.svg
|IconR=PartDesign AdditivePipe.svg
 
 
}}
 
}}
  
Line 14: Line 15:
 
{{GuiCommand
 
{{GuiCommand
 
|Name=PartDesign AdditiveLoft
 
|Name=PartDesign AdditiveLoft
|Workbenches=[[PartDesign Workbench|PartDesign]]
+
|MenuLocation=Part Design → Create an additive feature → Additive loft
|MenuLocation=Part Design → Additive loft
+
|Workbenches=[[PartDesign_Workbench|PartDesign]]
 
|Version=0.17
 
|Version=0.17
|SeeAlso=[[PartDesign AdditivePipe|PartDesign AdditivePipe]]
+
|SeeAlso=[[PartDesign_AdditivePipe|PartDesign AdditivePipe]], [[PartDesign_SubtractiveLoft|PartDesign SubtractiveLoft]]
 
}}
 
}}
  
Line 29: Line 30:
 
<translate>
 
<translate>
 
<!--T:5-->
 
<!--T:5-->
''On the left: cross-sections (A), (B) and (C); created Additive loft on the right.''
+
{{Caption|On the left: cross-sections (A), (B) and (C); created Additive loft on the right.}}
  
 
==Usage== <!--T:6-->
 
==Usage== <!--T:6-->
Line 36: Line 37:
  
 
<!--T:7-->
 
<!--T:7-->
# Press the {{Button|[[File:PartDesign_AdditiveLoft.svg|16px]] [[PartDesign_AdditiveLoft|Additive loft]]}} button.
+
# Press the {{Button|[[File:PartDesign_AdditiveLoft.svg|24px]] [[PartDesign_AdditiveLoft|Additive loft]]}} button.
 
# In the '''Select feature''' dialog, select a sketch to be used as base profile object and click {{Button|OK}}.
 
# In the '''Select feature''' dialog, select a sketch to be used as base profile object and click {{Button|OK}}.
 
#* Alternatively, a single sketch can be selected prior to pressing the Additive loft button.
 
#* Alternatively, a single sketch can be selected prior to pressing the Additive loft button.
 
# In the '''Loft parameters''', press the {{Button|Add Section}} button.
 
# In the '''Loft parameters''', press the {{Button|Add Section}} button.
# Select the next sketch in the [[3D_view|3D view]]. Repeat to select more sketches in the order you want them to be lofted through.
+
# Select the next sketch in the [[3D_view|3D view]]. Repeat to select more sketches in the order you want them to be lofted through. (You can change the section order any time later in the loft dialog by dragging sections in the list to the desired position.{{Version|0.19}})
 
# Set options if needed and click {{Button|OK}}.
 
# Set options if needed and click {{Button|OK}}.
  
Line 49: Line 50:
 
# Select several sketches. It is hereby important in what order you select them:
 
# Select several sketches. It is hereby important in what order you select them:
 
#* The sketch selected at first will become the base profile object in the next step
 
#* The sketch selected at first will become the base profile object in the next step
#* The sketch(es) selected after the first one will become the loft section(s). Also here the selection order is important: The sketch selected as second will become the first loft section, the one selected as third becomes the second section and so on.
+
#* The sketches selected after the first one will become the loft sections. Also here the selection order is important: The sketch selected as second will become the first loft section, the one selected as third becomes the second section and so on. (You can change the section order any time later in the loft dialog by dragging sections in the list to the desired position.{{Version|0.19}})
# Press the {{KEY|[[Image:PartDesign AdditiveLoft.svg|24px]] '''Additive loft'''}} button.
+
# Press the {{Button|[[File:PartDesign_AdditiveLoft.svg|24px]] [[PartDesign_AdditiveLoft|Additive loft]]}} button.
# Set options if needed and click {{KEY|OK}}.
+
# Set options if needed and click {{Button|OK}}.
  
 
==Options== <!--T:8-->
 
==Options== <!--T:8-->
  
 
<!--T:9-->
 
<!--T:9-->
* '''Ruled surface''': makes straight transitions between cross-sections. Dos not apply to a loft with two cross-sections. If not checked, transitions will be smooth.
+
* '''Ruled surface''': makes straight transitions between cross-sections. Does not apply to a loft with two cross-sections. If not checked, transitions will be smooth.
 
* '''Closed''': makes a transition from the last cross-section to the first, creating a loop.
 
* '''Closed''': makes a transition from the last cross-section to the first, creating a loop.
  
Line 66: Line 67:
 
* {{PropertyData|Ruled}}: see [[#Options|Options]].
 
* {{PropertyData|Ruled}}: see [[#Options|Options]].
 
* {{PropertyData|Closed}}: see [[#Options|Options]].
 
* {{PropertyData|Closed}}: see [[#Options|Options]].
* {{PropertyData|Refine}}: true or false. If set to true, cleans the solid from residual edges left by features. See [[Part RefineShape|Part RefineShape]] for more details.
+
* {{PropertyData|Refine}}: true or false. If set to true, cleans the solid from residual edges left by features. See [[Part_RefineShape|Part RefineShape]] for more details.
 
* {{PropertyData|Profile}}: the see base profile object of the loft.
 
* {{PropertyData|Profile}}: the see base profile object of the loft.
 
* {{PropertyData|Midplane}}: non applicable.
 
* {{PropertyData|Midplane}}: non applicable.
Line 81: Line 82:
 
* To better control the shape of the loft, it is recommended that all the cross-sections have the same number of segments. For example, for a loft between a rectangle and a circle, the circle may be broken down into 4 connected arcs.
 
* To better control the shape of the loft, it is recommended that all the cross-sections have the same number of segments. For example, for a loft between a rectangle and a circle, the circle may be broken down into 4 connected arcs.
 
* Loft will be created in the order that cross sections were added
 
* Loft will be created in the order that cross sections were added
 +
* If the sketch has inner geometry, i.e. the loft is supposed to have holes, then the order in which the sketch geometry is created should be the same for all sections: either start all sections with the inner geometry or start them all with the outer. Otherwise an invalid loft can be created where inner and outer walls cross.
 +
 +
== Known Issues == <!--T:24-->
  
== Known Issues == <!--T:16-->
+
<!--T:16-->
 
* Some failure modes will turn the part black
 
* Some failure modes will turn the part black
  
Line 88: Line 92:
  
 
<!--T:15-->
 
<!--T:15-->
* [[Part Loft Technical Details|Part Loft Technical Details]] explains how a [[Part Loft|Part Loft]] is created, much of its content is relevant to the PartDesign Additive loft.
+
* [[Part_Loft_Technical_Details|Part Loft Technical Details]] explains how a [[Part_Loft|Part Loft]] is created, much of its content is relevant to the PartDesign Additive loft.
 +
 
  
 
<!--T:18-->
 
<!--T:18-->
 
{{Docnav
 
{{Docnav
 
|[[PartDesign_Revolution|Revolution]]
 
|[[PartDesign_Revolution|Revolution]]
|[[PartDesign AdditivePipe|Additive pipe]]
+
|[[PartDesign_AdditivePipe|Additive pipe]]
 
|[[PartDesign_Workbench|PartDesign]]
 
|[[PartDesign_Workbench|PartDesign]]
 
|IconL=PartDesign_Revolution.svg
 
|IconL=PartDesign_Revolution.svg
 +
|IconR=PartDesign_AdditivePipe.svg
 
|IconC=Workbench_PartDesign.svg
 
|IconC=Workbench_PartDesign.svg
|IconR=PartDesign AdditivePipe.svg
 
 
}}
 
}}
  

Revision as of 22:08, 16 September 2021

Other languages:
Deutsch • ‎English • ‎Türkçe • ‎español • ‎français • ‎italiano • ‎polski • ‎português do Brasil • ‎română • ‎русский

PartDesign AdditiveLoft.svg PartDesign AdditiveLoft

Menu location
Part Design → Create an additive feature → Additive loft
Workbenches
PartDesign
Default shortcut
None
Introduced in version
0.17
See also
PartDesign AdditivePipe, PartDesign SubtractiveLoft

Description

Additive Loft creates a solid in the active Body by making a transition between two or more sketches (also referred to as cross-sections). If the Body already contains features, the additive loft will be merged to them.

PartDesign AddLoft example.png

On the left: cross-sections (A), (B) and (C); created Additive loft on the right.

Usage

Dialog-based workflow

  1. Press the PartDesign AdditiveLoft.svg Additive loft button.
  2. In the Select feature dialog, select a sketch to be used as base profile object and click OK.
    • Alternatively, a single sketch can be selected prior to pressing the Additive loft button.
  3. In the Loft parameters, press the Add Section button.
  4. Select the next sketch in the 3D view. Repeat to select more sketches in the order you want them to be lofted through. (You can change the section order any time later in the loft dialog by dragging sections in the list to the desired position.introduced in version 0.19)
  5. Set options if needed and click OK.

Selection-based workflow

introduced in version 0.19

  1. Select several sketches. It is hereby important in what order you select them:
    • The sketch selected at first will become the base profile object in the next step
    • The sketches selected after the first one will become the loft sections. Also here the selection order is important: The sketch selected as second will become the first loft section, the one selected as third becomes the second section and so on. (You can change the section order any time later in the loft dialog by dragging sections in the list to the desired position.introduced in version 0.19)
  2. Press the PartDesign AdditiveLoft.svg Additive loft button.
  3. Set options if needed and click OK.

Options

  • Ruled surface: makes straight transitions between cross-sections. Does not apply to a loft with two cross-sections. If not checked, transitions will be smooth.
  • Closed: makes a transition from the last cross-section to the first, creating a loop.

Properties

  • DataLabel: name given to the operation, this name can be changed at convenience.
  • DataSections: lists the sections used.
  • DataRuled: see Options.
  • DataClosed: see Options.
  • DataRefine: true or false. If set to true, cleans the solid from residual edges left by features. See Part RefineShape for more details.
  • DataProfile: the see base profile object of the loft.
  • DataMidplane: non applicable.
  • DataReversed: non applicable.
  • DataUp To Face: non applicable.
  • DataAllow Multi Face: non applicable.

Limitations

  • Sketches must form closed profiles.
  • It is not possible to loft to a vertex.
  • A cross-section cannot lie on the same plane as the one immediately preceding it.
  • To better control the shape of the loft, it is recommended that all the cross-sections have the same number of segments. For example, for a loft between a rectangle and a circle, the circle may be broken down into 4 connected arcs.
  • Loft will be created in the order that cross sections were added
  • If the sketch has inner geometry, i.e. the loft is supposed to have holes, then the order in which the sketch geometry is created should be the same for all sections: either start all sections with the inner geometry or start them all with the outer. Otherwise an invalid loft can be created where inner and outer walls cross.

Known Issues

  • Some failure modes will turn the part black

Links