The idea for the design came from an Indian movie, Aavesham, & one of the lead characters uses it as his “tools”.
Both the dagger & opener part were designed to be 3d printed to test the concept, but the future models will have provision to insert customised opener & dagger tips.
If the 3d printed dagger tip is tight to fit in, then dip the opener handle insert & dagger slot in warm water to ease the insertion. 2nd version of the opener handle was modified for easy insertion & to avoid this step. Also the opener slot was made bigger to accommodate for finger rolling.
The author marked this model as their own original creation.