Rhino Mouse Tutorial Continued

Rhino Mouse tutorial continued.

Finally join these surfaces together to form a single unit then. Then join them to the remaining top component surfaces.
The result should now look as shown opposite. /
Next we will round the front end of the mouse.
Draw and arc approximately as shown. /
Next extrude this arc vertically upwards.
This surface will be used to cut away the front of the mouse. This will be achieved by using a Boolean operation.
Copy this surface so that we have one for rounding top and one for rounding the base. Use F3 to transfer these onto appropriate layers /
However before doing this we will need to surface directions. All surfaces have an 'external' and 'internal' surface. The external surface is comparable to the external face of a solid, or the side exposed to open air.
To determine the direction of a surface choose analyse direction from the bottom of the main toolbar. /
Ensuring that the arrows are in the direction shown perform a Boolean subtract .
Ensure that all top surfaces are joined correctly to form a single solid. Likewise with the base. /
Next apply a solid fillet of 1mm radius to the edges shown below.

Next we will slice the top part into a number of pieces to form the buttons.
Use the rectangle command to draw the shapes (top right). Use the 1mm snap grid to position. /

Thensolid extrude upwards (bottom right) and use Boolean subtract to slice the top into separate pieces.
Following the Boolean operation each piece will be a separate solid. /

Application of finishing detail to base

Display the base and hide the tops. Then apply 1mm fillets to the front edges.
Next we will cut a concave recess of variable radius along the bottom edge. However to ensure that the feature clears the end of the base we need to extend the bottom curve. /
To extend the edge select the extend tool from to curve tools extend sub menu,select the end of the curve to extend followed by return, then in response to end of selection type 5 to specify the extend distance.
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Next create a circle perpendicular to the curve of radius 2mm.
Next create an array along a curve.
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Enter 3 for the number of items and accept all remaining settings. /
Next scale the middle circle up by 1.5. Use a side view to select the centre point. /
Next you will create a surface following ‘rail’ 1 and passing through sections, 2,3 and 4.
Under surfaces select sweep using 1 raid.
For the rail select curve 1
For the cross sections select circles 2, 3 and 4. /
Accept the default values in the dialog box presented by selecting OK. /
Next subtract this tube from the existing solid using a Boolean subtract operation.
This will leave the ‘open’ solid shown opposite. /
The gap will now be refilled by resurfacing using sweep with 2 rails.
from the surface menu.
Select: surface 2 rails /
Command: _Sweep2
Select rail curves: Select [edge 1]
Select rail curves: Select [edge 2]
Select cross section curves: Select [3]
Select cross section curves: Select [4]
Select cross section curves. [return] to finish /
Accept the default settings in the dialog box which appears. /
Shown opposite is the resulting surface when isolated from other surfaces.
Finally take the resulting surface and join it to the remaining base to create a single solid using the join command.
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Display the layers containing to and base and hide everything else. /

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Rhino Mouse Modelling 2006