A few weeks ago, I published a post discussing the filament diameters common in 3d printing ... although it may not be convenient to buy 3mm filament locally. It would be a good idea to change ...
Discover Bambu Labs' PPA-CF filament, offering unmatched strength and durability for advanced 3D printing applications.
There is a huge amount of really cool and interesting stuff you can do with 3D printing ... any filament you might want to work with. That said, be aware that you need to have My Best Buy Plus ...