You can get kits of parts and need to print some parts for it or source it yourself. This is one of the best hobbyist grade 3d printers you can build. https://www.formbot3d.com/products/voron-24-corexy-3d-printer-kit-with-different-print-sizes-for-choice https://www.3dprintersbay.com/voron-2 All open source with some seriously fast and precise 3d printing. They have some other designs too.