This tool can slit (corrugated) pipe. One may want to do slit a pipe for cable-managing where the connectors do not fit through the pipe. The picture shows an older but functioning version. The models are based on an updated improved version. 

Extra Hardware

• utility knife blade
• 2x M3 screw
• 2x M3 nut

Printing

The odd orientation of the model is for printing without support. I recommend a brim for better bed adhesion though.

Assembling

Use some M3 screws and nuts to fix the utility knife blade.

Model

I did the model work with OpenSCAD. Future work will be tidy up the code and publish it as well.