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![](https://pinterest.com/pin/create/button/?url=https%3A%2F%2Fwww.homemadetools.net%2Fforum%2Fshowthread.php%3Fp%3D238039%23post238039&media=https%3A%2F%2Fs3.amazonaws.com%2Fhmt-newsletter%2Fhmt_avatar_200.jpg&description=Zigzag Threaded Bolt - GIF by albertq - Looking at the fine lines on the threads at the 25sec instant, it looks like it could be 3D metal printed, or even cast using the black plastic printed part as the "lost wax=" mould form. In the jewellery industry the amount of detail in lost wax investment castings was amazing.= "Pin It")
Looking at the fine lines on the threads at the 25sec instant, it looks like it could be 3D metal printed, or even cast using the black plastic printed part as the "lost wax" mould form. In the jewellery industry the amount of detail in lost wax investment castings was amazing.
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