After having many issues with the gantry and lead rods from first assembly I asked about the warranty. Creality actually told me to box up and return the unit (at their expense). I returned the unit to the warehouse as instructed and in less than 10 days I had my new HI printer. I was skeptical at first but this printer runs great. I use fusion 360 to design my own stuff. I use Creality Print to slice my files and the only issues I have had with the new printer is operator error.