Comment by Animats

Noisebridge was a free, open maker space in San Francisco, and they had too many people just hanging out there. Twice, they had to shut down for over a month, clean out all the crap, and start over. The maker spaces that charge don't have that problem.

At TechShop, the big operational problems were tool deterioration and staff burnout. Tools tended to stabilize at the point where they're just above worn out. The drill bits and milling cutters were dull. The sandpaper on the belt sanders was worn almost smooth. The CNC mill needed a coolant change. The laser cutters had laser systems performing at about 50% of rated power, and you had to halve the feed rate. In a commercial shop, you'd fix things before they got that bad, because you're losing production. The same business logic does not apply to maker spaces.

The staff problem with TechShop was that they paid slightly above minimum wage, which is nowhere near enough to keep people with a broad range of shop skills. The big employee benefit was that you could take classes for free, so it was sort of an apprenticeship program. Over time, the staff tended to become the ones who couldn't get a job in a real shop.

Those are some of the operational problems you have to beat.