p56 Herschel loop The loop uses only two kinds of Herschel conduits: a stable 77-step Herschel translator/flipper by Dave Buckingham equipped with a blocker and a p8 65-step Herschel left turn and flip conduit (a p8 variation modelled after a p3 65-step conduit by Dave Buckingham). Dieter Leithner, 14 Dec 1997

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