This lockout device is designed to enable the use of small lock to keep little fingers away from collectibles stored in a display cabinet.
Compatible with CANVAS Evelyn Cabinet Product #068-7560-4 and Master Lock Model No. 646D. Note that the lock shackle diameter is 3.2mm and that the spacing between the cabinet door knobs varies depending on the door adjustments. This lockout device easily accommodates spacing between 15.8mm and 20.8mm (measured at the widest part of the knobs). The lockout device is designed specifically to work with the knobs present on the CANVAS Evelyn Cabinet.
Both parts are printed at the same time. I recommend the use of an 8mm skirt/brim at the base and between 4 and 6 perimeters/shells.
This was one of my most difficult projects. It took me nine iterations until I achieved a decent fit and strength. I had initially only measured the dimensions of one pair of cabinet knobs and had not realized that each pair required a different fit. Once this was corrected, I realized that the lockout device was too weak and the lock hole broke easily. Once this was corrected, I realized that the device could be removed without knowing the lock combination simply by wiggling the device and pulling on the doors. I went through more iterations to get the parts to print properly without seizing.