Where do you order your stuff such as sheet metals and CNC machined parts?

I've tried finding portals using Google which was more or less successful and also quite exhausting since even if you find good portals, they often only deliver to industrial customers or in rare cases don't ship to Europe. So far I've found fractory.com, xometry.com, weerg.com and protolabs.com but I am curious where other RepRappers get their parts from. I know most of you probably use aluminum extrusion profiles but there are maybe also some who need sheet metal or CNC machined parts in their projects.

So my question: where do you order them?