Movie S4. Static coiling, straight rod: Nearly circular coils formed when a naturally straight rod (κn=0, same material and geometric parameters as in Movies S1–S3) is deployed onto a steady substrate (i.e., belt speed, vb=0). The direction of coiling is monotonic and set by symmetry breaking at initial contact. The injection speed is v=2.0 cm/s. Experiments (Left) vs. simulations (Right) are shown. The movie is sped up by a factor of 5, with respect to real time.