Vise spreader. By my mechanics insights. 12:18 video:
https://www.youtube.com/watch?v=VXvMa_n3zls
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Vise spreader. By my mechanics insights. 12:18 video:
https://www.youtube.com/watch?v=VXvMa_n3zls
Threads are a versatile inclined plane; aka 'helix'. Still surprised when even a small thread generates significant force. Pushing a rusted vise open is decent proof. Good vises are tossed every day, saving and restoring usefulness is worth the effort.
Speaking of rust, it's said that a volume of rust is 7x that of the material 'consumed' to produce it. So, even parts that seem had clearance, it might not anymore!