Euler's Identity Keychain

This is a key chain of "Euler's identity", which is said to be the most beautiful mathematical formula in the world. You can always carry and enjoy this equation, which contains Napier's constant (e), imaginary unit (i), Pi (π), multiplicative identity (1), and additive identity (0).ShopYou can purchase this keychain from my BOOTH shop at the link below.https://hiroloquy.booth.pm/items/4557925Non-3D printed partsKeychain strap - 1 pcsPrint settingsRafts: NoSupports: NoLayer height: 0.15 mmInfill: 20 % gyroidTemperature (nozzle / bed): 200℃ / 60℃Nozzle: 0.25 mm (kaika625)Printer: Prusa i3 MK3S+ & MMU2S (up to 12 colors available with modifications)Slicer: PrusaSlicer 2.5.0Filament: PolyTerra PLA (Polymaker)Color: Charcoal Black, Cotton White, Lava Red, Sapphire Blue, Forrest Green, Sunrise Orange, Fossil Grey