The bane of 3D printing is what people commonly call bed leveling. The name is a bit of a misnomer since you aren’t actually getting the bed level but making the bed and the print head parallel.

M anually leveling your 3D printer’s bed can sometimes be confusing, especially if you rely on vague instructions. Many ...

[Jonas] posted a video showing the semi-automatic bed leveling capability of his printer. The build platform is held a bit high by springs that surround each of the 3 screws that support the bed ...

As I've seen with many of the best 3D printers, there's a lot of self-checking that goes on, so the auto bed levelling, strain gauge system, and other fail-safes all help to avoid misprints.