I make the rescue knife for cut the car belt. This knife use the firefighters when is it necessary cut the car safety belt.
It is possible to use to any other reason. Knife is safety for children use, because the sharp part of the knife is hidden in plastic.
Before you print this model, prepare an metal snap-off knife (1 piece of the original snap-off knife width 18mm - you must very carefully break 5 pieces of this knife - see the foto).
Now you slice this model, use the pause after 9 layer of this model, when the printer is paused, insert you the metal knife at the destinate place of model and continue with printing. The metal knife will be closed into the model.
All model is printed from ABS filament.
The author marked this model as their own original creation.