A structurally-accurate, modular, and articulating B-DNA model kit optimized for desktop FDM 3D-printers.

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• adenine.stl, thymine.stl, cytosine.stl, guanine.stl
  • Nucleobase pieces
• backbone.stl
  • Backbone piece with no built-in articulation
• backbone_artic_o.stl
  • Same as backbone.stl but with built-in articulation at C3-O bond
• backbone_artic_2.stl
  • Same as backbone.stl but with built-in articulation at C3-O and C4-C5 bond.
• endcap_o.stl, endcap_p.stl
  • 5' and 3' end caps respectively.

• affine_transformation.scad
  • Maps junctions onto models. Check module for more information
• all-junctions.scad
  • Generates the varoius junctions utilized throughout the model
• global_variables.scad
  • Global variables used by all OpenSCAD scripts
• two_point_cylinder.scad
  • Generates a cylinder between two arbitrary points

The aesthetic choice of nucleobases is modified from Folding DNA model kit. by Michael Kupier released under the CC BY 4.0 License.

Design of junctions inspired by the following paper:

• Goodwin-Schoen, C. M., & Taylor, R. E. (2023). Modular, Articulated Models of DNA and Peptide Nucleic Acids for Nanotechnology Education. The Biophysicist. https://doi.org/10.35459/tbp.2022.000225

B-DNA structure reference: https://doi.org/10.2210/pdb2BNA/pdb

• Positions of atom #352, #365~#376 and #385 are used to generate the backbone piece.

The entirety of this work, including both the STL files and the OpenSCAD scripts that generate them, is licensed under the CC BY-NC-SA 4.0 License.