E.g. What I used before I had my own printer: https://i.materialise.com/en. Source: about 1 year ago

Https://i.materialise.com/en is the service I've used. Upload the stl I make in blender, and it quotes the price. Source: about 1 year ago

Not for the US, no. But a quick search should give you good enough sites e.g. https://i.materialise.com/en. Source: almost 2 years ago

i.materialise.com , I believe the formats used are .OBJ and .WRL. Source: almost 2 years ago

I can recommend these guys for printing any material i.materialise. Source: over 2 years ago

Night Shift + Shifty is a much better choice than f.lux nowadays anyway. Source: over 1 year ago

It works better than f.lux for me, because it works at a lower level than Gamma table manipulation. I’ve been using Night Shift ever since it was released and I like its color rendering more than f.lux. But it’s subjective, some people like the extreme warmth of f.lux more. It depends on how you perceive colors and how well you can adjust to warmer colors. Shifty is also a very nice addition if you want more... - Source: Hacker News / about 2 years ago

Lunar developer here. Thanks for mentioning it! Just a note to avoid confusion: Lunar serves a completely different purpose than f.lux. f.lux changes the colour temperature by altering the Gamma tables. Lunar's main function is controlling the hardware brightness/contrast/volume/input/colors of external monitors using DDC and private macOS methods. Macos also has native approach to f.lux called Night Shift. I use... - Source: Hacker News / about 2 years ago