Community Based Engineering, Manufacturing, Maintenance, and Repairs

The 3 prior posts explained shadow engineering and makerspace concepts.
h/t WRSA and fabbersmith
All it really takes is having the people with the engineering background,the people with the skills to operate whatever machinery is needed to make whatever it is you need to make,and the people with the skills to maintain and repair whatever it is you design and produce.
Some things will not take all the individual skill sets,a machinist can duplicate parts without the need for an engineer,a mechanic may have enough skill on the machines to make whatever part it is he or she needs-etc.
The idea is that within your tribe,you have people with a wide array of skill sets. Once you have these people,any long term SHTF event will be much easier to get through.
Not only that-you become more self reliant for the here and now,less dependent on anyone/anything outside of your tribe.
The reason being-if you can manufacture spare engine parts,duplicate parts from anything you need parts for,and have a group of people who can repair,rebuild,or just make from start to finish anything you need-then you can manufacture whatever it is that is in demand,and it will bring needed income in whatever form it may take,be it medical supplies,food,items you can not manufacture on your own,etc.

http://starvinlarry.com/2014/11/11/community-based-engineering-manufacturing-maintenance-and-repairs/

Be sure to read the 3 prior articles linked to on starvinlarry.com so you get the history of the concept...