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Differential D2879 Diff 9387 manual/modeling/meshes/editing/duplicating/spin.rst

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manual/modeling/meshes/editing/duplicating/spin.rst

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| Panel: :menuselection:`Tool Shelf --> Tools --> Mesh Tools --> Add: Spin` | Panel: :menuselection:`Tool Shelf --> Tools --> Mesh Tools --> Add: Spin`
| Hotkey: :kbd:`Alt-R` | Hotkey: :kbd:`Alt-R`
The *Spin* tool extrudes (or duplicates if it the selection is manifold) the selected elements, The *Spin* tool extrudes (or duplicates it if the selection is manifold) the selected elements,
rotating around a specific point and axis. rotating around a specific point and axis.
Use the tool to create the sort of objects that you would produce on a lathe Use the tool to create the sort of objects that you would produce on a lathe
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If you are modeling a hollow object, it is a good idea to thicken the outline. If you are modeling a hollow object, it is a good idea to thicken the outline.
Fig. :ref:`fig-mesh-spin-glass` shows the profile for a wine glass we will model as a demonstration. Fig. :ref:`fig-mesh-spin-glass` shows the profile for a wine glass we will model as a demonstration.
Go to the *Edit Mode* and select all the vertices of the Profile with :kbd:`A`. Go to *Edit Mode* and select all the vertices of the Profile with :kbd:`A`.
We will be rotating the object around the cursor in the top view, We will be rotating the object around the cursor in the top view,
so switch to the top view with :kbd:`Numpad7`. so switch to the top view with :kbd:`Numpad7`.
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The spin operation leaves duplicate vertices along the profile. The spin operation leaves duplicate vertices along the profile.
You can select all vertices at the seam with Box select :kbd:`B` shown in You can select all vertices at the seam with Box select :kbd:`B` (shown in
Fig. :ref:`fig-mesh-screw-duplicate` Seam vertex selection and Fig. :ref:`fig-mesh-screw-duplicate`) and
perform a *Remove Doubles* operation. perform a *Remove Doubles* operation.
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Or, worse, too many vertices will have been merged. Or, worse, too many vertices will have been merged.
.. note:: Merging two vertices in one .. note:: Merging two vertices into one
To merge (weld) two vertices together, select both of them by :kbd:`Shift-RMB` To merge (weld) two vertices together, select both of them by :kbd:`Shift-RMB`
clicking on them. Press :kbd:`S` to start scaling and hold down :kbd:`Ctrl` clicking on them. Press :kbd:`S` to start scaling and hold down :kbd:`Ctrl`
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