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 printe

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. I have also used their CNC milling to make a tool from steel. It was delivered exactly as specified including threaded holes. It really blows my mind that they can provide these services so cheaply. 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.