Technical Drawing and Sketching, Continued
Sketching arcs,
To sketch ellipses freehand, hold the pencil naturally and rest the weight of
circles, and
your hand on the upper part of your other forearm. With your hand raised
ellipses
(Continued)
slightly above the paper, move the pencil rapidly in an approximate elliptical
path. Once in motion, lower the pencil to lightly sketch overlapping ellipses.
Figure 4-8 illustrates the steps involved in freehand sketching an ellipse.
Figure 4-8.—Drawing ellipses.
Transferring or
When you need to transfer or trace images from one drawing to another or
tracing images
from one portion of a drawing to another location, you may transfer the
image using a carbon or saral paper. When you have multiples of the same
image and want to preserve some uniformity throughout their rendition, you
will want to use this method. An easy way to transfer images when carbon
or saral paper is not available is to color the backside of the paper or tracing
with a contrasting color. Position the image into the new location and trace
around its outline. The color on the reverse side of the image transfers the
image to the paper.
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