dna model print in place 3D 打印模型

simple and easy to print twisting dna model for kids.
support should be only in touch of the building plate.
no infill
layer height - 0.2 mm
wall thickness - 2 mm.

designed to be print in place, tolerance of the model is 0.4 mm.

test print was on bq hephestos 2
no additional assembly required, just twist it and gave to the kid.

in the assembly model there is 12 pcs (1 start, 10 middle, and 1 end piece). but there are separately models of start, middle and end piece, so you could print it separately as mush as you want and assemble after was.