I bought two ortur in May 2021. The factory installed the lower bushings backwards on my so called 15 watt. That caused the thing to bind up and BROKE the X drive stepper motor backboard. I took pictures, (maybe 20 or so), epoxied the broken backboard together and was on the road again after I reassembled the thing correctly. I contacted Ortur and 5 pages of detailed report complete with 9 pictures they said that I was right and they would send me new backboards. They shipped my backboard expedited mail free of cost. A couple of days later my cooling fan bearings went out. I contacted Ortur again, they said no problem we will ship them right out. The next day I got an e-mail from some girl that said, if I wanted expedited shipping it would cost me 27 US bucks otherwise it would take 4 to 6 weeks. I wrote back, 4 to 6 weeks for factory broken parts? A few hours later I got on here and told the world about how sloppy Ortur QC is and that I would never buy another Ortur again. And guess what, about 10 hours after posting sloppy QC, I got a e-mail from that same girl and she said that my replacement parts have been shipped by expedited mail free of charge and she gave me a tracking number. She even said that they were including a new power module to go on top of the fan. Funny what the power of a pen can get done!! " NOW" for the good part, last Sat. (7-10-21) My
x drive tracking belt on my 7 watt jumped off the x-drive gear. After looking closely at it saw that good ole Ortur left out the two bottom screws that hold on the x-drive motor onto the backboard and they had so much tention on the belt, that pulled, (or bent) the backboard forward and downward causing the belt to jump off. I bought two little screws and back on the road again. You think I should make Ortur send me two little screws?