the plans are available as pdf-file and containing detailed assembly drawings in color. each group is drawn in assembled state, and contains the drawings of the parts in original size. written instructions with a functional description, building instructions and a materials list, complete the plans. the entire plans are bilingual in german and english. in the base plate four threads are needed. just turn a screw slowly into the predrilled holes. the base plate is glued together from several layers. the chambers are filled with lead or sand to give the clock a secure stand. drill a hole on the back for the jack socket. the lid is screwed because of better accessibility.
with the adjustable tips, the clock can be precisely aligned so that the ball always rolls. also glue the bearing brackets... ...measure their position thoroughly... ...and then glue them on the base plate. use the minute arbor as assembly aid... ...and check the position again with a try square. the shank of a drill bit ensures that the holes are aligned. solder the cables before installing the micro switch. surpress the motor with capacitors so that it doesn't interfere with radio signals.
finally solder the cables. the cables are laid into the base plate... ...and hidden behind covers. the seesaw is composed of many components. its strength comes from its sandwich construction. the contacts with which the ball turns the seesaw, are simply stripped cable ends. glue the cable covers only slightly, so you can remove them, if necessary. fan the contacs as large as possible to get a large contact area for the ball. the cables from the seesaw are hidden in the rear bearing bracket.
it must be aligned with the front bearing bracket exactly. therefore use again the minute arbor as assembly aid. once the seesaw is mounted, the cables are laid into the base plate. when you solder the cables to the jack socket pay attention to the correct polarity. the knurled nut ensures a secure hold of the socket in the base plate. connect the same cable colors with a barrier strip. check if all cables are clamped correctly. you can adjust the tilt of the seesaw with the screw precisely. the linkage wheel is secured to the motor shaft with a grub screw. connect the seesaw with the rod to the linkage wheel.
the wood gears are placed directly on the brass rods. lubrication is not necessary. the minute wheel is secured with a grub screw to the minute arbor. drill out the small minute pinion a bit... ...and install a small grub screw for the attachment to the minute arbor. a small, soft, paper ball under the grub screw serves as a friction clutch. the dial is glued to the base plate at the end, to minimize the risk of damage. tighten the grub screw just enough so that the hands are not moving on its own. turn the intermediate wheel until the hour hand points to the twelve... ...and then also set the minute hand by hand to twelve o'clock.
now both hands are synchronized and the construction is completed.
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