When starting your drawing always begin by generating a prism.
To learn how to do this click
Modify your prism to the proportions you want
your object to be. Do this by chopping off parts of your prism
until you have the proportions you want.
It will be faster to make good guesses than
get too concerned about measurements. For example this box
is three times higher than it is wide and two times longer
than it is wide.
The first lines you draw may not be the ones
you want to end up seeing. Nevertheless you need these lines
to help you generate the shapes you want. These are called
construction lines and they are best done lightly in pencil.
Don’t rub them out, simply go over the correct lines
in a fine felt tipped pen.
Construction lines in pencil
Final shape in Fineliner
If you want to modify a face of a prism then
generally speaking the first lines you draw on that face will
be in the same orientation as the lines that define the outline
of that face.
Rounded corners are just like cylinders except
you are only using a part of the cylinder. Remember to put
the tracking rule in the slot opposite to the face you are
To draw an interior you need to remove the
roof and the walls closest to the viewer. Start with the floor-plan
and then project lines up from the corners.These will show
the walls. Check for proportions before adding any detail.
Give everything you do the “look test”.
Step one: look at what you have drawn. Step two: ask yourself ‘does
it look right’. If it doesn’t look right then it
probably isn’t. If it looks right then it is right.
If you want to segment a shape equally, for
cupboards in a kitchen for example, firstly set the proportions
of the cupboard
closest to you. Then draw the diagonal on this shape. The
angle of this diagonal will be the same on all the other shapes
a set square with the tracking rule draw the diagonal for
the next shape so that it is the same angle. The intersection
this new diagonal and the top edge indicates the width of
the next cupboard. You’ll see that the cupboards become
smaller as they go into the distance. This passes the look
To make a chamfer draw a diagonal truncating
a corner off one of the faces (with the tracking rule out of
the slots) and project the new corners to the other side of
the prism. Complete the chamfer with the second diagonal.
This method of drawing on one face and then projecting to the
other is ideal for some other shapes:
- Sometimes you will need to project from one surface onto
a surface that you can’t see. Don’t forget to show
only the lines that you can see. The lines that we can’t
see but are helpful for generating shapes are called ‘construction’ lines.
- To draw the following shape the projections were done across
- 13. To find the centre of a surface simply draw the diagonals
(with the tracking rule out of the slots).
- Use the centre on the top surface to draw a square based
- To show another object connected to a prism start by drawing
the surface that is in contact. Note that with protruding objects
you can see three corners
- To draw an indentation rather than a protrusion, begin with
the same shape and draw the inside corner (in this case the bottom
left corner). Note that for indented shapes you will normally
only see one corner. The length of this corner indicates how
deep the indentation is.
- As you design your object include variations of additions,
truncations and indentations.
Do you have any handy ways of using the 3D board that we can add to this list.
Send in your suggestions to email@example.com