Design Blueprint: The Drop Spindle Whorl

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24119224): A drop spindle costs almost nothing, yet its one shaped part, the whorl, decides how the tool behaves for every metre of yarn it ever makes. Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.