What do I need to build my own band?

My mother is a goldsmith and together we would like to build our own watch band. I was wandering if someone allready deconstructed the mechanical connector for the watch band. Any experience here? Unfortunately my watch will take a while to get shipped...

An update from my research:

there are two projects in the moment, trying to repuild the buckle (that is the mechanical connector for the band) on a industrial level.

click and adappt on indogogo. On Amazon you can find different bands, but without the buckle. But interesting enough, there is one, where you can see the buckle in peaces and how it works, although they are not selling that peace (it is a bit confusing …): apple watch band by aerb inc.

I still can not find specifications for that buckle, not even in the patent for the classic buckle. Is there anyone with a milanese loop or a classic buckle and a 3d scanner at hand? Help would be appreciated …

By now there are a lot of producers on alibaba.com, who produce the adapter. The price varies between $3 and $20. We made a sample order for the more expensive one.

Here are some of the producers: alibaba.com

And here are some pictures out of the „factory“