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At a highlevel, to contribute to Project ONC, read the main pages including the FAQ and then create a log in or log into the collaboration tools: wiki, source code repository at github, chat and meetup.
Start Here First
Read the main site: http://www.autofracture.com/opencarbon and FAQ: http://autofracture.com/opencarbon/faq
Read the main page of this wiki, it will contain the latest status of this project and any updates.
Subscribe to the meetup: https://www.meetup.com/Open-Source-Nanocarbon-ManufactureOpenNanoCarbon/
Say hi on chat: https://gitter.im/opennanocarbon/
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