WARNING: USE AT YOUR OWN RISK! This design has not been tested for strength or effectiveness! 

The design is currently very specific to my cabinet handles and spacing.  I imagine this style is pretty standard in the USA, but for the lock to be effective the fit must be tight.

I plan to upload the fusion project file once the design is dialed in and cleaned up.  This should hopefully allow you to adjust the knob size and spacing and have the model parametrically update.
 

Printing and Assembly

Recommended to print in PETG with enough perimeters so that the hinge is 100% infill.

Supports required (see image for recommended setup).  Fit is tight by design.  Sand to adjust force required to open.

Requires M2 20mm bolt and nut.