Bea and Hans are building a truss for the balcony dumbwaiter, so that it can swing out towards the courtyard. First the truss was drawn up in a simple CAD program, then the tubes are coped in the little workshop.
Bea and her dad broke out the drafting tools and made a full-scale drawing to check the fit of the prepared tubes. Next, they'll have to make an assembly jig and start brazing it all together!
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