Figure 2-42 illustrates the consequences of improper pen handling.
Figure 2-42. Defective ink lines.
Pen nibs and reservoir pens must be kept clean. Crusted ink will ruin a
drawing that is in progress, rust a nib, and permanently freeze a technical
pen. Pen nibs are easily cleaned in warm water with a mild detergent. Use
water and ammonia to remove stubborn ink, When you are using an
ultrasonic cleanser, do not leave a reservoir pen in the cleanser for a long
time. Heat from the vibrating cycles will melt the retaining cap. Before you
clean a reservoir pen, consider the following guidelines:
thoroughly clean the pen before periods of nonuse,
disassemble the pen only for thorough cleaning, and
handle all parts carefully.
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