October 2010
Beginner
176 pages
8h 7m
English

The Ping Ponger uses almost half of a rubber racquetball as a disc spring that’s bistable (it can be at rest in 2 possible states) to propel a ping-pong ball from a compact PVC launcher.
YOU WILL NEED
Rubber racquetball Ping-pong balls Marker, knife, saw, and half-round file PVC glue, epoxy, and sandpaper
PVC pipe and fittings:
For the handle:
1″ pipe, 1½″ length
1″ repair coupling
1½″ pipe, 4½″ length
For the body:
2″ snap tee part #463- 020S from flexpvc.com
1½″ female adapter coupling
For the backstop:
2″ pipe, 1″ length
⅝"-wide ring from the insert coupling (below)
For the barrel:
2″ pipe, 1¾″ length
2″ insert ...
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