(c) Caring for brushes. For the lettering brushes to perform
properly and have a long life, you must clean and store them properly.
All paints are not compatible with all thinners.
Therefore, when you
clean the lettering brush, you must ensure the thinner is compatible with
the paint (figure 1-68). If you do not use the correct thinner to clean
the brush, you could ruin the lettering brush.
Paint/thinner compatibility chart
Proper cleaning and storage of lettering brushes help prolong their life.
After you have cleaned lettering brushes used in oil paints or lacquers,
fill them with linseed oil, shape the hairs, and place them on their
sides. Never rest brushes on their hairs.
An expedient way of storing a brush is to fill it with motor oil. The
oil prevents the remaining paint from hardening, which causes the brushes
to become useless. However, you must clean the brush and change the oil
after a month of non-use.
A paint brush conditioner helps keep the larger brushes soft and pliable
(figure 1-69). The container and thinner also softens dried oil-based
paints in brushes. (The GSA supply catalogue details this container.)
letter graphic projects. Both mechanical and prepared letters have the
advantage of producing uniform letters.
Unfortunately, even the most
experienced illustrator cannot letter a