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Cloudy weekend, lots done. Got the 12mm ply, build the centre cage. Drew up a cardboard template first so I could draw them out identical. Marked up the ply and routed the centre hole and then trimmed the Hex's out. Cut 3 pieces of 20mm finished timber and squared and sanded them to exactly equal length. The cage is the reference point for all other measurements so needs to be as square and parallel as possible. Checked assembly accuracy then glued and triple screwed every joint. Checked after completion and it came out within .25 of a mm for parallel between the two hex faces. Phew !
The dovetail will mount off one of the three side plates, a guide scope off one of the other two sides.
The round disk assembly on the last photo is a tentative idea for a back plate for the mirror cell, still cogitating on that and ideas for the truss tubes mounting hardware.
Also picked up some varnish for all the timber work and the three bolts and wingnuts for the mirror cell.
Machine heads and E strings are ordered.
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