8yr 3d printer. Ran my own small 3d printer business for a few years, buying all makes and models repairing and reselling. Built custom designed 3d printers from scratch and sold my printers from California to North Carolina. Owned a print farm of 20 plus printers for awhile and ran a team to donate over 700 printed masked for hospitals and emergency personnel during covid. Found Bambu Labs and quit building and selling printers. There's no competing with there technology, print quality and speed. Absolutely love Bambu Labs products. Great product, service ease of use, leaders of industry.