(c) Position the T square. Adjust the T square, template, pen,
and scriber to the proper position for lettering on the guidelines. Once
you have the T square properly positioned, a piece of tape at both ends
of the T square helps prevent it from moving. Occasionally, moving the
template along the T square causes smudges and streaks on the drawing
surface. To prevent these marks from appearing on the project, place a
piece of scrap paper between the drawing surface and the template.
(d) Letter the graphics project.
If you make a mistake when
lettering the graphics project, let the ink dry and remove the error with
a steel eraser.
Then reburnish the drawing surface and insert-the
correct lettering.
(3) Other lettering machines. Other mechanical means of producing
lettering are the Kroy or Merlin pressure lettering machines.
These
machines produce characters through a pressure or dry carbon transfer
process using a lettering font or wheel with various styles and sizes (8
to 36 point) of raised letters. The machine prints the characters on
1/2-inch paper or plastic strip that is clear or colored with an adhesive
back with a protective, peel-off coating. These machines range from a
simple, one character at a time process, to automatic with computer
memory, editing functions, and a display screen (figure 1-73).
Figure 1-73.
Pressure lettering machine
1-78
SS0530
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