21700 Battery End Cap

thingiverse

This is a versatile end cap designed specifically for use with 21700 Batteries. Print one unit, and the snug fit should securely cover your positive connection. Print two units, and connect them with a length of filament between them to provide a safer method of transporting your battery. Use an extended piece, and you can place the caps on and twist for a tighter seal. File contents: Single 21700 cap featuring a notch for filament piece Filament hole tester: Filament diameters range from smallest to largest: 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm Each 3D printer has unique tolerances, and what works on one machine may not be the same on another. A small test piece can be printed to try different filament hole diameters before committing to a full job.