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.

Affiliate links to items used in this video

Polishing Compound https://amzn.to/3wHXof1
The best polishing wheels ever https://amzn.to/2VjG2GK
Overture 3d printer filament https://amzn.to/2UqwwRC
Some of my favorite hand files https://amzn.to/3lFzUDO
The die grinder I use https://amzn.to/3Aebg1c
Clear Coat I love this stuff! https://amzn.to/2V71kYj
NeverDull metal polish https://amzn.to/3zumeiH
Liver of Sulfur https://amzn.to/3rIUBjz

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:

Elegoo Saturn 3d Printer https://amzn.to/3iGIPlw
Creality Ender 3 Pro V2 https://amzn.to/37sidiM

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.