Surprised not to see Lulu publishing on here. Whenever I need a North America hardcover print job, I refuse to use anyone but them -- a 300 page linen hardcover is $20, and gets cheaper as you make the components more and more modest. I print all my own custom notebooks that are laid out just like want this way.
<a href="https://www.onlinemetals.com/" rel="nofollow">https://www.onlinemetals.com/</a> will let you order custom cut metal supplies. I ordered from them years ago. It was the <i>only</i> source I could find at the time for being able to get just a small quantity of sheet copper. Everyplace else was like "Sure, we will sell you scads of copper sheet for scads of money. Bulk orders only."
I only have experience with PCBWay. I'm not associated with them at all, but their service is amazing. I've ordered (in 50+ quantities) five different 3d printed parts. In my case I chose MJF (multijet fusion) as I wanted a semi-professional looking part and had already prototyped using my FDM printer (regular 3d printer) at home. The price is shockingly low (like a couple of dollars per part) and the shipping from China to the US is very fast.<p>I have also used their CNC milling to make a tool from steel. It was delivered exactly as specified including threaded holes.<p>It really blows my mind that they can provide these services so cheaply.<p>Edit: Forgot my favorite feature. Most of the time there is an automatic quote for the price. It gets reviewed by a human, but I've only ever see it go down, not up, after review. Other services really want a human to look things over first which turns me off as I don't want to wait several days to hear that it is too expensive.
Are the regions strictly where they're based or where they serve? I've used PCBWay and JLCPCB for projects and had the boardś mailed from China to the US. But can I take it for granted that I could do this with the rest of the suppliers?<p>FWIW both services provided excellent boards, even with an order of only 5 units.
CraftCloud aggregates a lot of 3d printers. As in, you upload your model once and select from a zillion available processes, materials, methods, locations, speeds, prices.<p>Shapeways and Sculpteo both missing from this page, both conforming to the instant on-line criteria.
Personal opinion:
I'd suggest making each category collapsible/expandable so that you don't have to scroll through all the countries to find the category that you're looking for.