I am a very inventive boy,"" says Andy Buckram with the immodesty of completely accurate self-assessment. He's sure to take his place as a favorite among the ingenious boys of junior fiction just as the author's Newbery winning Cady Woodlawn is among spunky girls, in a novel that is poised on a fine comic line between SF and fantasy. Andy's first robot was Campbell, put together from soup cans but, ""making robots is something like eating peanuts. It does no good to say, 'this is the last peanut, ' because you are sure to want just one more."" So Andy builds two more robot men and one robot lady, gradually increasing their size and capabilities. While Campbell turned out to be useless and babyish, Bucket was designed to carry water. Lily Belle was an experiment in mechanical babysitting and gave tongue at odd moments with three records embedded in her midriff--a lullaby, a yodelling chorus and a stump speech by Senator Quackenbush. Supercan was made for heavy work, especially for rowing the leaky boat that Andy kept putting off mending. The Buckram farm was in flood country and when the storms came, Andy was isolated from his parents but when lightning electrified the robots, he set off in his leaky boat, rescued a girl classmate, recovered his baby cousin Dot from a barndoor floating past and repaired to an island where he must constantly supervise his active but purely mechanical tin crew. Here the adventure begins and the fun continues.