2-9
Soldering Irons
A soldering iron is shown in figure 2-4. This is connected to the 115-volt ac variable outlet of the
power unit. You control the temperature by adjusting the voltage. The iron has replaceable tips. Chosen
for their long life and good heat conductivity, soldering iron tips are high quality with iron-clad over
copper construction. The tip shape and size and the heat range used are determined by the area and mass
to be soldered.
Figure 2-4.—Soldering iron.
ROTARY-DRIVE MACHINE
This variable-speed, rotary power drive adapts to standard diameter shank drill bits, ball mills,
wheels, disks, brushes, and mandrels for most drilling and abrasive removal techniques (figure 2-5).
Figure 2-5.—Rotary-drive machine handpieces.
The accessories used with the rotary-drive tool are shown in views (A) through (F) of figure 2-6.
Abrasive ball mills, wheels, discs, and brushes are either premounted on mandrels or can be mounted by
the technician on the mandrels provided. These attachments are used for sanding and smoothing repaired
areas, drilling holes, removing conformal coatings, and repairing burned or damaged areas. A chuck-
equipped handpiece allows it to accept rotary tools with varying shank sizes.
