Keycap Plunger, Atari 800 Hi-Tek Keyboard

thingiverse

Replacement key plunger for the Atari 800 Hi-Tek keyboard. For smoother keypress action, sand the outer surfaces of the 3D-printed plunger until it no longer binds in its guide. Insert the legs of needle-nose tweezers from the top of the plunger through the two semicircular openings at the bottom of the plunger. Squeeze tweezers while lowering the plunger so that the tips of the tweezers spread the contacts and guide them through the openings. Remove tweezers after the plunger is seated. Reshape the contacts (if needed) with tweezers or needle-nose pliers so that the contacts close when the key is pressed, and open when the key is released.