@Dazzy - I mostly use DTFB (Adams) - Uncle Bills stocks it ( I think they are an Aussy Company? I also use another one from the art supply shop but I don't know the brand (it has a card surface rather than a paper surface so is slightly stiffer and heavier) - all foam board flies in my experience!
A bit more progress - yes I used my micro cable ties again, however this time I used a slightly beefier one given this ship is more of a beast - remember to ‘V’ the centre with a blunt chisel for the folding point.
Drilled the pilot holes and glued the cable ties into the flap side - added some blocks with CA to pack the wing side.
a small job to make up the charging rig for the battery - next, fit the pitot speed sensor and sort out the battery selection and CG - I glued washers under the wing from the previous CG setup so it should be a relatively simple task.