# Creating a Contour Model {% tabs %} {% tab title="Step 1" %} ## Scaling, Contouring & Flattening {% embed url="" %} > 3 MINUTES #### **VIDEO NOTES** **Important Commands and Actions:** * Scale the model using the *\_Scale* command and type the scale factor into the command line. * Use the *\_Contour* command to generate a series of contour lines across a surface at a given spacing and direction. * Use the *\_ProjectToCPlane* command in the **TOP Viewport** to flatten linework to the XY Plane. **Alternative commands:** * Instead of *\_ProjectToCPlane*, you can also use the *\_Make2D* command to flatten the linework to the XY Plane. #### **RESOURCES** * [Download the Rhino example file here.](https://drive.google.com/uc?export=download\&id=1JKr3NJ51D_8vtvuIVl17HJJZSoR_YEbj) * [Click here](http://docs.mcneel.com/rhino/5/help/en-us/commands/contour.htm) for more information about the 'Contour' command. * [Click here](http://docs.mcneel.com/rhino/5/help/en-us/index.htm#seealso/sak_cplanes.htm) for more information about the 'CPlane' in Rhino. {% endtab %} {% tab title="Step 2" %} ## Modelling Material Thickness {% embed url="" %} > 4 MINUTES #### **VIDEO NOTES** **Important Commands and Actions:** * Create a new sublayer by *right-clicking* on an existing layer and selecting *'New Sublayer'* in the dropdown list. * To select multiple objects in Rhino, hold down the *shift* key. * To change the layer an object is on, select it, *right-click* on the layer you wish to change it to, and select '*Change Object Layer*'. * Generate surfaces from closed planar curves using the *\_PlanarSrf* command. * Split surfaces with curves using the *\_Split* command. * Select all the surfaces in your file using the *\_SelSrf* command. * To create polysurfaces (3D objects) from planar surfaces (2D), use the *\_OffsetSrf* command, including typing the offset distance direction in the command line. * To select all objects on a particular layer, right-click on the layer and select the 'Select Objects' option in the dropdown list. #### **RESOURCES** * [Click here](http://docs.mcneel.com/rhino/5/help/en-us/commands/offsetsrf.htm) for more information about the 'OffsetSrf' command {% endtab %} {% tab title="Step 3" %} ## Creating Supports with Notched Joints {% embed url="" %} > 5 MINUTES #### **VIDEO NOTES** **Important Commands and Actions:** * Select objects in your file and use the *\_BoundingBox* command to generate an enclosed box around what you have selected. * Use the *\_Explode* command to polysurfaces into separate surface objects. * Use the *\_Scale2D* command to readjust the dimensions of a surface in a single direction/axis. * Split the surfaces using the \_Split command and selecting polysurfaces as the splitting objects. * Use the *\_SrfPt* command to create a planar surface. * Generate a polysurface using the *\_OffsetSrf* command. * Create notch trimming objects using the *\_Box* tool in the toolbar. * Use the *\_Copy* command for the desired amount of notches you need, and use the *\_Scale1D* to adjust their length to what you need. * To create the notched profile in each polysurface, use the *\_BooleanSplit* command, using the boxes created as the splitting objects. This support base method is not compulsory for students to follow, but simply a recommendation and demonstration of a possible method you can use. #### **RESOURCES** * [Click here](http://docs.mcneel.com/rhino/5/help/en-us/commands/boundingbox.htm) for more information about the 'BoundingBox' command. {% endtab %} {% tab title="Step 4" %} ## Unrolling and Layout {% embed url="" %} > 4 MINUTES #### **VIDEO NOTES** **Important Commands and Actions:** * Turn on the *\_Gumball* along the options panels and select objects to use it to move and rotate them. * Generate 2D profile curves from 3D objects using the *\_Make2D* command in the **TOP Viewport.** * Use the *\_UnrollSrf* command to unroll polysurfaces made up of flat, developable surfaces in the XY Plane. * Use the *\_DupBorder* command to generate boundary curves from selected surfaces. * Use the *\_Offset* command for edge curves you wish to create folded tabs. **Make2D Settings:** * Drawing Layout: set to '**Current View**'. * Options: tick '**Maintain Source Layers**'. * Visible Lines: set to '**CONTOURS**' layer. #### **RESOURCES** * [Click here](http://docs.mcneel.com/rhino/5/help/en-us/commands/gumball.htm) for more information about the 'gumball'. * [Click here](http://docs.mcneel.com/rhino/5/help/en-us/commands/unrollsrf.htm) for more information about the 'UnrollSrf' command. {% endtab %} {% tab title="Step 5" %} ## Nesting Line work {% embed url="" %} > 2 MINUTES #### **VIDEO NOTES** **Important Commands and Actions:** * When copying objects from one Rhino file to another, select what you wish to copy and use the *\_CopyToClipboard* command, followed by the *\_Paste* command in the *\_New* file. * To place objects onto the provided layers in the template file, select the objects, *right-click* on the layer you wish to place them on and select '*Change Object Layer*'. * *Double-click* on the provided text to update the required information for your project. * Use the *\_Scale1D* command to adjust the dimensions of the sheet boundaries. * Finally, use the *\_Move* command to nest you linework within the sheet boundaries. #### **RESOURCES** * [More information about the 'CopyToClipboard' command](http://docs.mcneel.com/rhino/5/help/en-us/commands/copytoclipboard.htm) {% endtab %} {% tab title="Tech Sessions" %} Making a contour model with Non-orthogonal edges. {% endtab %} {% endtabs %}