Making a bolt with double threads - DOES IT WORK? - Lost PLA metal casting - 3d print to solid metal

Using the lost PLA metal casting I will turn 3d prints into metal castings in my DIY backyard foundry. I started by printing the models on my 3d printer. I then coated them with a ceramic material. I then fired the shell in my kiln and then poured metal into the shell. This is similar to the lost wax casting process. Please consider supporting me on Patreon. https://www.patreon.com/user?u=58360840 You'll receive access to Patreon only posts as well as any 3d printing files that I designed. 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. Oleg Pevtsov's bolt video    • Десятизаходная резьба в два направления.   3d models https://www.thingiverse.com/thing:469... / https://www.thingiverse.com/thing:470...