A 3d printed tool for joining any 1.75mm filament 

After trying and failing in the past to reliably join filament, and after testing of different methods to do so,

i have come up with this 3d printed design which will join any 1.75mm filament reliably and when following the instructions (see pics) the end result will mean a strong and consistent joint .....Great for those emergencies when you are running out of filament mid print!