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iambic_paddle_w-base_assy_021816.pdf
Use the same technique adding the
leaf holders
.
Space the two leaf holders with the #2 x 3/4” long #2
nylon spacer, 2-
56 x 1” long screw and one of the 2-56 nuts. Match the registration letters and
alignment marks. Slide the leaf holder assembly between the alignment gage, up against the backstop
and light tack the pad between the base and paddle leafs. Check for squareness. Adjust if needed by
re-heating the tack. Once you are satisfied, tack both pads where they intersect the backstop. If all is in
alignment, go back and finish soldering all of the pads. Remove the alignment gage
, nylon spacer, 1”
long screw, nut, and solder the inside pads between the base and leaf holders.
Solder the 4-40 brass nut to the assembly using the figure below as a guide. It is helpful to rub the
brass nut on some scotchbrite or emery paper to remove any oxidation on the brass. Use the hardware
as shown in the figure. The lock washer ensures the nut is square with the surface of the PCB when
heated. Solder the brass nut to the base. Heat the nut from the side. Do not get any solder on the top of
the nut. If you do, it must be cleaned off. Remove the holding screw and lock washer.
