Making a bolt with MAZE threads - Can you solve it? - 3d print to metal -Lost PLA

In this video I will be making a puzzle bolt with complicated maze 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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Casting equipment
Melting pot https://amzn.to/3OeyeiI
PetroBond https://amzn.to/4bZJqsJ
Crucible salamander https://amzn.to/4eo1vSW
Crucible lifting Tongs https://amzn.to/3Vtc26G
High heat Gloves https://amzn.to/3XqPiai
Leather Jacket https://amzn.to/4chpUaU
Boot Covers https://amzn.to/4aZ1G4o
Boots https://amzn.to/3XpFmxz
Casting Flasks https://amzn.to/3Rtj4XT
Graphite Molds https://amzn.to/3VkiIUK
Blow torch https://amzn.to/3z3Rkms
Respirator https://amzn.to/3zbFUNq
Face shield https://amzn.to/4b47XM3
ToAuto Furnace https://amzn.to/4epMeRz
Propane Furnace https://amzn.to/3yVQIz9

3d printing FDM
Filament https://amzn.to/4coyVPQ
3d printer Ender https://amzn.to/3L58YsZ

3d printing Resin
Siraya tech castable resin https://amzn.to/4b95n7w
Elegoo resin https://amzn.to/3XrASGY
Resin Printer Mars 4 https://amzn.to/3RsL6mw

Belt Grinder
Grinding Belts https://amzn.to/3RsTySM
Surface conditioning belts https://amzn.to/4eicD41
Trizact belts https://amzn.to/3RuW0bg

Belt Grinder Accessories
Grinding Belts https://amzn.to/3RsTySM
Surface conditioning belts https://amzn.to/4eicD41
Trizact belts https://amzn.to/3RuW0bg
6” grinding wheel https://amzn.to/4b3NF5h

Welding
Kidskin welding gloves https://amzn.to/3VstSXu
Prime Weld machine https://amzn.to/3KMeXCQ

Metal finishing tools
Nevrdull https://amzn.to/3XwyVsu
Liver of Sulfur https://amzn.to/3XkFCOs
Protectaclear Clear Coat https://amzn.to/3XrBjkA
Scotch-brite Wheels https://amzn.to/3KI6v7B
Metal Files High Quality https://amzn.to/4eifrOB
Die grinder discs Benchmark abrasives https://amzn.to/4esof4v
Dremel - rubber polishing bits https://amzn.to/3KKvAi5
Dremel - Wire brushes https://amzn.to/3yYtQiu
Simichrome Polishing Compound https://amzn.to/3xapnZM

General
Wilton bullet bench vice https://amzn.to/4ckifIV
Bandsaw blades https://amzn.to/3XkmGPT
JB weld https://amzn.to/3xapGno
Super Glue https://amzn.to/3VISP2i
Shop Lights https://amzn.to/3xmMVur
Loc-line shield https://amzn.to/45v7Nfx
Smoke purifier https://amzn.to/3XoCMI4

Some of my favorite tools of the year
Makita Blower https://amzn.to/4c43LNK
Mini circular saw https://amzn.to/3VnWykp
Makita blower small https://amzn.to/4eCxFKT
Ratcheting screwdriver https://amzn.to/3KQUc8J
German pliers https://amzn.to/3xiRKou
Dremel cordless https://amzn.to/45ofDrt

Camera Equipment
Canon 6d II https://amzn.to/4erxUbi
Lights https://amzn.to/3xjzMSK
Rode Mic https://amzn.to/3XkFkHm
Canon 50mm stm https://amzn.to/3VJ3EBu
Canon 24-70 f2.8 https://amzn.to/3z340dn

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.

Where I bought the Suspendaslurry https://www.ransom-randolph.com/suspe...