Build a Roll-a-Ball Game
These are plans for a game called Roll a Ball.
YOUNGSTERS worn out by the "creative" toys
and push-button monsters they got for Christmas
will find this game a welcome relief. It's plain fun,
with emphasis on coordination, not education.
It's as simple to construct (mostly from
scraps) as it is to play. The principle is to zigzag
a large marble or steel ball from the starting
position shown above through the pivoting parallel
bars to the base.
You've got to manipulate the
levers skillfully to avoid inclining the bars so
much that the marble shoots past the projecting
catch-end of the next-lower bar. And even when
you master this, you must reverse the pitch at
just the right moment to send the caught ball in
a new direction. If you seesaw the bars too
much, the ball just rocks back and forth at the
center. When you've mastered this, add a second
ball at the top when the first is halfway down.
How to Build a Roll a Ball Game
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