Double Helix Pencil Holder
thingiverse
A pencil holder constructed from a double helix. The helix is supported by a wire frame. The frame makes the structure stable and allows it to be used as a pencil holder. Details are provided in the OpenSCAD code. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator (5th Generation) Rafts: Doesn't Matter Supports: No Resolution: 0.3 mm Note The holder is based on the B form of DNA. It was scaled so that 2.3 mm on the holder correspond to an Angstrom. The small groove, 13 Angstroms, is the shorter vertical distance between strands, 30 mm, and the large groove, 21 Angstroms, the longer vertical distance between strands, 48 mm. The diameter of the helices, 20 Angstroms, is 46 mm on the model.
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