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Making a bolt with ZIGZAG threads - SO STRANGE! - Lost PLA metal casting

Robinson Foundry

Subscribers 155K subscribers

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Published on Nov 12, 2021
In this video I will be making a bolt with unique zigzag threads. I started this project by 3d printing models in a plastic called PLA. Then I coated the models 10 times with a ceramic material called Suspendaslurry. After the ceramic shells were completely dry I placed them in my kiln and melted out the PLA plastic. At 1500 degrees Fahrenheit the ceramic shells became vitrified, turning into a ceramic that can withstand the heat of molten bronze. I melted the bronze in my homemade keg foundry furnace and then poured the liquid metal into the ceramic shell molds. This is similar to the lost wax casting process.

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Polishing Compound https://amzn.to/3wHXof1
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Thinking about getting into 3d printing and/or metal casting? Do yourself a favor and and buy yourself a 3d printer! Here are some I recommend:

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All of the links above are affiliate links. This means that, at zero cost to you, I will earn an affiliate commission if you click through the link and finalize a purchase.

------- 3d printed versions -------

I plan on selling 3d printed versions of the bolts shown in this video. I'm am working to set up a website and sell them as soon as possible. Please check here soon.
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