Show HN: Spin Lab https://ift.tt/kQZwIt5

Show HN: Spin Lab Hey HN, I built Spin Lab: a browser-based interactive explainer for table-tennis spin. It visualizes topspin/backspin, spin rate, ball trajectory, bounce behavior, and why the opponent’s return reacts the way it does. I built it because spin is central to table tennis, but most explanations are either too hand-wavy or too static. Thanks Fable, we miss you https://ift.tt/a1S7Vdr June 16, 2026 at 09:16AM