Kind of in the Bought & Built: I fell for the Kickstarter trap and bought a 3D printer kit. Spent almost a year of tinkering and upgrading but it never worked

Kind of in the Bought & Built: I fell for the Kickstarter trap and bought a 3D printer kit. Spent almost a year of tinkering and upgrading but it never worked reliably (always more to fix). Bought a few commercial ones which worked (mostly - 3D printers are frustrating).