Window frames being fabricated from 3mm thick 16mm angle iron. Will be covered in silicone to protect it. Hopefully have them before Christmas.
The frame is currently full of old poly boxes waiting to be carved for insulation before i order the inside cladding and get started on that. Now looking at 18mm (3/4") MDF as i'm linering it, not painting it.
Have Tarpaulin already for 2 of the liners, just leaves the good strong black pond liner left to sort out.
Progress is slow.