This year, I've built an awful lot of flat-pack furniture - so what better way to celebrate it than a flat-packed Christmas tree to send instead of boring old cards?
The tree is made with 3 mm lasered plywood and a length of aluminium tubing. All the parts fit into an A4-sheet of wood, and the whole thing is designed to be packed up into an A5 envelope for posting.
The plywood cost of each tree was around £1, and 1 m of tubing is around £2.50 (from B&Q).
I took the STL files and used OpenSCAD to project each branch into a 2D DXF. Then I drew up a base, some spacers and a star for the top in QCAD.
I laid all the parts out in Inkscape so they'd all fit nicely into 2 A5 sheets, along with a slot for the central tube.
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