96 lines
6.9 KiB
HTML
96 lines
6.9 KiB
HTML
<html><head><title>PartDesign SubtractiveLoft</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><link type='text/css' href='wiki.css' rel='stylesheet'></head><body><h1>PartDesign SubtractiveLoft</h1></div>
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<div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="mw-parser-output"><table class="fcinfobox wikitable ct" >
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<h3><span class="mw-headline" id="PartDesign_SubtractiveLoft"><a href="https://www.freecadweb.org/wiki/index.php?title=File:PartDesign_SubtractiveLoft.png" class="image"><img alt="PartDesign SubtractiveLoft.png" src="PartDesign_SubtractiveLoft.png" width="32" height="31" /></a> PartDesign SubtractiveLoft</span></h3>
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<th class="ctOdd">Menu location
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<td class="ctEven">Part Design → Subtractive loft
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<th class="ctOdd">Workbenches
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<td class="ctEven"><a href="PartDesign_Workbench.html" title="PartDesign Workbench">PartDesign</a>
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<th class="ctOdd">Default shortcut
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<td class="ctEven">None
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<th class="ctOdd">See also
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<td class="ctEven"><a href="PartDesign_AdditiveLoft.html" title="PartDesign AdditiveLoft">Additive loft</a>, <a href="PartDesign_SubtractivePipe.html" title="PartDesign SubtractivePipe">Subtractive pipe</a>
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<td class="ctToc"><br /><div id="toc" class="toc"><div class="toctitle"><h2>Contents</h2></div>
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<ul>
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<li class="toclevel-1"><a href="#PartDesign_SubtractiveLoft"><span class="tocnumber">1</span> <span class="toctext">PartDesign SubtractiveLoft</span></a></li>
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<li class="toclevel-1 tocsection-1"><a href="#Description"><span class="tocnumber">2</span> <span class="toctext">Description</span></a></li>
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<li class="toclevel-1 tocsection-2"><a href="#How_to_use"><span class="tocnumber">3</span> <span class="toctext">How to use</span></a></li>
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<li class="toclevel-1 tocsection-3"><a href="#Options"><span class="tocnumber">4</span> <span class="toctext">Options</span></a></li>
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<li class="toclevel-1 tocsection-4"><a href="#Properties"><span class="tocnumber">5</span> <span class="toctext">Properties</span></a></li>
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<li class="toclevel-1 tocsection-5"><a href="#Limitations"><span class="tocnumber">6</span> <span class="toctext">Limitations</span></a></li>
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<li class="toclevel-1 tocsection-6"><a href="#Links"><span class="tocnumber">7</span> <span class="toctext">Links</span></a></li>
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<p><br />
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</p>
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<h2><span class="mw-headline" id="Description">Description</span></h2>
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<p><b>Subtractive Loft</b> creates a subtractive solid in the active Body by making a transition between two or more sketches (also referred to as cross-sections). Its shape is then subtracted from the existing solid.
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</p><p><span style="font-size:x-small;"><a href="Release_notes_0.17.html" title="Release notes 0.17">available in version 0.17</a></span>
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</p><p><br />
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</p>
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<h2><span class="mw-headline" id="How_to_use">How to use</span></h2>
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<ol><li> Press the <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;"><a href="https://www.freecadweb.org/wiki/index.php?title=File:PartDesign_SubtractiveLoft.png" class="image"><img alt="PartDesign SubtractiveLoft.png" src="24px-PartDesign_SubtractiveLoft.png" width="24" height="23" srcset="PartDesign_SubtractiveLoft.png 1.5x" /></a> <b>Subtractive loft</b></span> button.</li>
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<li> In the <b>Select feature</b> dialog, select a sketch to be used as first cross-section and click <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;">OK</span>.
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<ul><li> Alternatively, a single sketch can be selected prior to pressing the Subtractive loft button.</li></ul></li>
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<li> In the <b>Loft parameters</b>, press the <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;">Add Section</span> button.</li>
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<li> Select a sketch in the 3D view. Repeat to select more sketches.</li>
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<li> Set options if needed and click <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;">OK</span>.</li></ol>
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<h2><span class="mw-headline" id="Options">Options</span></h2>
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<ul><li> <b>Ruled surface</b>: makes straight transitions between cross-sections. Dos not apply to a loft with two cross-sections. If not checked, transitions will be smooth.</li>
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<li> <b>Closed</b>: makes a transition from the last cross-section to the first, creating a loop.</li>
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<li> Press the <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;">Remove Section</span> button to remove a sketch, by selecting it in the 3D view.</li></ul>
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<h2><span class="mw-headline" id="Properties">Properties</span></h2>
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<ul><li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Label</b>: name given to the operation, this name can be changed at convenience.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Sections</b>: lists the sections used.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Ruled</b>: see <a href="#Options">Options</a>.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Closed</b>: see <a href="#Options">Options</a>.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Midplane</b>: N/A</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Reversed</b>: N/A</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Refine</b>: true or false. If set to true, cleans the solid from residual edges left by features. See <a href="Part_RefineShape.html" title="Part RefineShape">Part RefineShape</a> for more details.</li></ul>
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<h2><span class="mw-headline" id="Limitations">Limitations</span></h2>
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<ul><li> Sketches must form closed profiles.</li>
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<li> It is not possible to loft to a vertex.</li>
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<li> A cross-section cannot lie on the same plane as the one immediately preceding it.</li>
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<li> 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.</li></ul>
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<h2><span class="mw-headline" id="Links">Links</span></h2>
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<ul><li> <a href="Part_Loft_Technical_Details.html" title="Part Loft Technical Details">Part Loft Technical Details</a> explains how a <a href="Part_Loft.html" title="Part Loft">Part Loft</a> is created, much of its content is relevant to the PartDesign Subtractive loft.</li></ul>
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<p><br />
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<div style="clear:both"></div>
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</div><div class="printfooter">
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Online version: "<a dir="ltr" href="https://www.freecadweb.org/wiki/index.php?title=PartDesign_SubtractiveLoft&oldid=255130">http://www.freecadweb.org/wiki/index.php?title=PartDesign_SubtractiveLoft&oldid=255130</a>"</div>
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