Making a Utility Knife Mold for Leftover Casting Resin @JimmyDiResta

Jimmy DiResta had a cool idea. He created a mold for a disposable utility knife, so if he’s casting something and has a bunch of leftover resin, he can cast a disposable utility knife with the excess.

He’s planning on developing the mold into a product for sale, but you could obviously design, print, mold, and cast your own.

This project raises another great question. If you do a lot of casting and have leftover resin, what other tools and other castable objects can you create silicone molds for?