Explaining The Universe on Instagram: "Follow (us) @ExplainingTheUniverse to learn something NEW every day 🧠💫 A cast saw is a special medical saw used to safely remove plaster or fiberglass casts from patients once a bone has healed. Unlike regular saws, it doesn’t spin continuously but instead uses a rapidly oscillating blade that moves back and forth in short strokes. This motion is strong enough to cut through the hard cast material but not through soft tissue, since skin and padding undern