modular chain bracelet

I made modular bracelet system - just for fun and to learn new techniques.

How to make it - for a simple bracelet - print complete chain with proper lenght, connector and pin. Every extra part measures 1cm.

Edit2921016: Sorry people, complete chains were not ended with proper part, Im replacing these with right ones. For those who have printed it from original file I'm adding new connector (connectorREP.stl) what will fit. Also repaired pin (pin_2.stl) was added.

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There are five main components of this system:

-first fraction, optimized for connecting with last part connector. It has no integrated axis so you can easily swap it if it breaks or you need extending. You will need extra pin.

-second is spare part used for extending bracelet. You will need extra pin.

-third part is main part of chain, use it if you want connected chain already from printer. It is loose enough, so you wont have to clean it up.

-fourth part is end connector, o