You can try
Fablab in Luzern, I just noticed it's new opening hours, much better, it used to only open on afternoons, I might actually be able to visit.
AFAIK you only pay for materials, but any new wonderful inventions you develop with the use of the lab have to be shared, you should be alright for your own art pieces.
On the fablab homepage for switzerland, it looks like they'll be coming to other cities too.