Great Pen - uses standard sized filament which is ideal!
Really like this 3D Pen. it uses the standard 1.75mm size filament which is great because it does go through a lot of filament as you are using it so have the ability to have a standard sized filament that you can get it bulk is ideal.
3D pen is non functioning. It does not heat to needed temp (requires tip replacement). Does not advance filament, requires entire pen replacement. Pen is worthless. I do not recommend purchasing used.