On a clean and flat surface lay out the base-plate, in this instance formed of aluminium of dimensions 500 x 500 x 1.5 mm.
Arrange the spars as shown ~ here measuring 1/16 x 1 x 2 x 39 inches ~ and mark up with a felt pen around the margins and the length of each spar as a guide to preparing the surfaces to be joined.
They should then be joined by a suitable epoxy and the choice is between a long cure suited to metal, or here a fast-setting mix to expedite. Super-glue might yet be tried and is likely to be equally cost-effective whilst altogether faster.
Effectively however this process serves mainly to locate the parts, as the plate and sections will be pop-riveted afterward.
