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Update: new profile for colour print without AMS - manual filament change.
Emergency Big Red button - no screws version
Based on some comments I decided to create this version that doesn't require any screws. So, it's fully-fully printable.
Check out other version here: https://makerworld.com/en/models/2542379-emergency-big-red-button-fully-printable#profileId-2799220
Assembly instructions
Insert three springs into slots - use something pointy (i.e. thin screwdriver, pencil, pen) to fully push the springs into slots - they fit in tight to avoid unwanted falling out
Find a mark on the case and align one of the guides on the button to it
Push the button into case at angle - aligned guide and marker
Fully push the button into the case - some force needed
Put together the case - use the dots to align it properly.