DNA, B-form base pairs

thingiverse

I've included updated models with thicker pins that are more robust when printed at smaller sizes. A-form DNA versions (GC-a and AT-a) have also been added. To automate pinning ball-and-stick nucleic acid models, I was working on a blender script. Testing it using an idealized B-form DNA model in Coot confirmed its effectiveness. My workflow is as follows: Coot (model) PyMol (ball-and-stick representation) Blender (automatic pinning script and unionize) These prints were made at 0.2 mm with supports in PLA at 195C. For optimal results, I recommend using a raft or placing supports under/around any spheres that will touch the build plate. They tend to pull off easily. A slight cleaning up of the pins is necessary, but their holes are larger than the pins so it shouldn't be too much work.