I thought this overview of services might be interesting to some folks here:
https://hackaday.com/2021/12/08/made-to-spec-the-coming-age-of-prototyping-as-a-service/
It's approached from the standpoint of an electronics hobbyist who's building little widgets, but some of these services offer things like metal parts, 3D printed parts, even injection molded parts. Many of these could be very usefully employed in building or repairing an experimental airplane.
https://hackaday.com/2021/12/08/made-to-spec-the-coming-age-of-prototyping-as-a-service/
It's approached from the standpoint of an electronics hobbyist who's building little widgets, but some of these services offer things like metal parts, 3D printed parts, even injection molded parts. Many of these could be very usefully employed in building or repairing an experimental airplane.