I'm in the process of extending and adapting my cabinets to meet my personal specific needs, and I'm also looking into building my own cabinets and shelves from scratch. During this process I came to realise that I want some jigs to help me create and space the holes in my cabinets correctly so that I can use other hardware made for this kind of cabinets. So the idea was born, and here is the realisation of that process. Hopefully someone else can also benefit from these models!