Christmas Tree Puzzle

thingiverse

This puzzle is based on my "Conceptual Christmas Tree" design at https://www.thingiverse.com/thing:3993228, which I've scaled up and chopped into 22 pieces that interlock to form a full tree that's 400mm tall and about 175mm across. Each Tier of the tree is made from a selection of parts that interlock using keys that can be round, square or hexagonal, and features square or round lugs on the bottom that lock into the layer below. Be sure you get each layer right, as there are multiple ways to assemble some of the layers, and if you pick the wrong one the layer above may not fit properly.