Reuse of worn jigsaw blades

Do you have a used jigsaw blade? The blade is only partially worn, and there are still some parts that are not worn. This is the idea of reusing a worn jigsaw blade. [Plan List] 【JIG】 ・​Extendable Circle Cutting Router Jig ・Drill stand ・Magnet drill stand ・Belt sander ・Making a 2-in-1 Circular Saw Slide Guide (Easy Panel Saw) ・How to make Line laser module ・Workbench ・Homemade height gauge ・right angle corner clamp