Description

BTC Keychain Single Color or  Multicolor

You can print this keychain even if you don't have an AMS and it doesn't even need glue.
The technique used in this print is to insert a pause that allows you to change filament at the right time.
Use the profile I loaded without changing any parameters, the profile is already set with a pause at layer #20, at which point the printer will pause, you can change filament and complete the print, if instead you want to make a single color print you can continue without changing filament. In any case I have also included the STL file for all your needs.