Flexible DNA double helix model molfidget

This is an all-atomic molecular model of deoxyribonucleic acid (DNA), created using molfidget. Hydrogen bonds are represented by magnets, allowing you to assemble two complementary strands into a double helix.In the print profile, there are separate plates for the bases (A, T, G, and C) and for the deoxyribose–phosphate chains. The deoxyribose–phosphate chains are available in two versions: a fully flexible version (chain-flex) and a version fixed to the helical geometry (chain-fixed). I recommend using the fixed version for at least one of the two strands. If both strands are flexible, the structure tends to form a ladder-like shape (as shown in one of the model images) and does not spontaneously form a helix. I have not tested using fixed chains for both strands, but this configuration should also work and may be easier for display purposes.You will need disc-shaped neodymium magnets with a diameter of 5 mm and a thickness of 3 mm. An A–T base pair requires four magnets, while a G–C