Hello Patrick
I believe you may find fertile ground if you embrace The users of Men's Shed's, this is a world wide movement, there must be thousands by now in every country. A men's shed is a community workshop set up with tools for the free use of the local community. (When an new member joins a group they, must prove their competency with tools and machinery before they can us it. some members choose to be supervisors to do this work) the type of equipment available varies between sheds. Wood, metal, or other depending on the shed.
The name "men's shed" is unfortunate. Women do get involved, maybe one day it will be changed, it should be. Community workshop is more appropriate. unfortunately different countries use different names.
Another fertile patch Is the so called "Hackerspace", at least it is not gender specific. And no I am not referring to smoke filled dimly lit rooms with piles of take away wrappers and empty coke cans in the corners, with overweight ghostly complexioned computer nerds trying to crack the CIA head mainframe!
These Hackers tend to be a well spread mix of young (from late teens) to seniors, often but not always educated, electromechanical inventors, quite a number are women, User built 3D printers were nurtured and are now continuously being improved by this movement. CNC routers, robotics, electronics and hundreds of other gadgets have been developed also.
The hackerspaces sadly need more access to practical engineering knowledge, and metalworking equipment. I see a great opportunity for a symbiotic relationship to form between the the Engineers that form the readership of MEW and ME and Men's sheds groups and the hackerspace groups, each has something unique to offer.
And there must be other movements I have not though of? Come on forum any Ideas?.
So there you are Patrick, work out a way to directly contact these people, It will be a lot more rewarding than Tweeting……
Regards
John