Timestamps:

0:04 [Intro] This is not a bona fide tutorial; more of a process video
0:16 [Rhino] Make sure you are working in millimetres, and save the file (with frequent intervals)
0:54 [Rhino] Import your reference image, and establish a suitable layer hierarchy
1:54 [Rhino] Changing object material transparency, and rotating the image
3:26 [Rhino] Positioning the images to be aligned to the X and Y axes, and scaling the images
6:14 [Rhino] Prepare for modeling with an adequate layer logic
7:36 [Rhino] Start modeling by adding Lines to straight segments, and Curves/InterpCrvs to curved segments
14:54 [Rhino] Use EditPtOn to change placement of curve weight points
18:34 [Rhino] Update the layer hierarchy and repeat the process for the front view
20:47 [Rhino] For ogee shaped custom S-curves, it might be easiest to construct them from helper lines and Curves
26:32 [Rhino] Align the two separate sets of trace curves, so that they match in position and scale
28:38 [Rhino] In a separate duplicate set of layers, arrange the reference curves spatially, so that surfaces may be shaped by them
33:50 [Rhino] Depending on the similarity of the two elevation sketches of the car, you may need to (re)define how they spatially relate to each other
39:44 [Rhino] Creating "cross-section lines" will make it easier to see how the surfaces will look like
43:25 [Rhino] Adding surfaces to the spatially arranged curves (PlanarSrf, Sweep2, ExtrudeCrv)
46:23 [Rhino] Sometimes it is easiest to create a final shape by subtracting/splitting with helper geometry, instead of only building additively
51:12 [Rhino] Depending on your personal tolerance, if coaligned surfaces do not successfully split, it might be easiest to extend one slightly
56:34 [Rhino] Use SolidPtOn to change placement of surface end points
1:00:19 [Rhino] Sweep2 with two rails and more than two cross-sections
1:09:38 [Rhino] The Arctic display mode offers a more volumetrically neutral view of the objects at hand
1:12:52 [Rhino] Making the sketch model solid, to be able to 3D print it
1:21:07 [Rhino] Mirroring the car sketch model and adjusting final width
1:23:42 [Rhino] Comparison with original sketch, and exporting as an STL mesh
1:26:11 [Blender] Quick render in Blender

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Links:

Rhinoceros:
https://www.rhino3d.com/

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Rhino commands:

General document handling:
Save [CTRL+S]
Undo [CTRL+Z]
Redo [CTRL+Y]

Selection sets, viewport maneuvering, measuring:
SelLast
SelCrv
ZE (Zoom to extents)
ZS (Zoom to selected)
Hide [CTRL+H]
Show [ALT+H]
Distance

Object manipulation:
M (Move)
Scale
Scale1D
Rotate
Mirror
Copy

Reference objects:
Picture

Curve objects:
Line
Polyline
Curve
InterpCrv
Circle

Manipulate curve objects:
InsertControlPoint
Rebuild (changes curvature of curves)
EditPtOn (change placement of curve weight points)
BlendCrv
Trim [CTRL+T]
Split [CTRL+SHIFT+S]
Join [CTRL+J]
Fillet (blend curves with a specific corner radius)
Extend
Explode

Surface objects:
Plane
PlanarSrf
ExtrudeCrv
Sweep1
Sweep2

Manipulate surface objects:
Cap
SolidPtOn (change placement of surface end points)
DupBorder

Volumetric objects:
Cylinder

Manipulate volumetric objects:
BooleanSplit
BooleanDifference
BooleanUnion

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This tutorial/process video introduces to KTH Architecture students a large set of intermediate commands to do hard surface modeling in Rhino, specifically with an example of turning a sketch of a car design into a sketch 3D model, ready to be 3D printed.

The operating system used for this tutorial is Windows 10. Running another operating system (e.g. Linux, MacOS) might amount to a different user experience or software incompatibility.

If you want to check in which computer room(s) any relevant software might be installed in – CADLAB, DFL, and ARCPLAN are in the KTH School of Architecture building – please check the following link for current status:
https://www.kth.se/en/student/it/campus/computer-rooms/lista

Disclaimer:
This tutorial aims to increase student awareness of the versatility of the digital tools available for use within the context of the architectural education offered by KTH. As such, it might not be generally applicable, but on the other hand, if at least one architecture student is helped by it in fulfilling deliverables requirements or being taught something of genuine interest, the purpose of this tutorial is satisfactorily achieved. There might be inaccuracies in this tutorial – if you identify any significant one, please tell us in the comments.