LED Cake Number

AboutI've made this enlighted cake(On the photo is actually cheese :) but who cares) number for my grandpa. It's made form LED filament(Don't mistake it with 3D printer filament!) and powered from CR1220 battery. I've used my custom pcb wich is not yet released to public, but you can easily just solder the LEDs to battery holder and put the battery in when needed.Other materialhttps://s.click.aliexpress.com/e/_DCUUZQj - LED Filament Numbershttps://s.click.aliexpress.com/e/_DkAyWlz - CR1220 Battery(3V) holderRecommended settings:Material: PLA or PETGLayer height: 0.2 mm