Folding Utility Blade - Safety Version (tutorial)

I've had tons of people messaging me hoping for a safer version (with metal parts). Well here it is! This new (and most likely) the last version I will create, has a metal pivot and a metal pin for the 180 degree rotation mechanism. This adds a TON of strength compared to the previous versions. Even though it is much stronger than previous versions, still use for light duty work only - it is still just a plastic, 3d-printed knife after all. Links to the hardware I used below. I have also eli