Welcome back to Aurora Tech channel, I am super excited today because I am going to unbox, assemble, and review this Two Tree Sapphire Plus CoreXY printer. This is my first CoreXY printer. There are a lot of parts inside the box, it may take a little more time to assemble compared to my other cartesian printer or the box frame Ender-5 Pro, basically, the assembly of this printer is a little similar to the Ender-5 Pro. I have already assembled and then disassembled this printer before recording this video. I have several points you need to address during assembly. There are also some issues you need to fix if you want this printer to work normally and safely. I will cover all of this one by one. I will divide the assembly process into 15 steps. Some will be more difficult than others. There are quite a lot of them, but I would consider them all to be minor issues. I believe some of the other issues are independent cases, since they only apply to the printer I received. In conclusion, although this print has a few quality issues, I think that it still has a good value, the best part is the metal frame is rigid. If we’d just bought a metal frame and 4 unbranded linear rails, it would have cost almost $300 including shipping. This whole printer only cost $375. Although the other parts that came with it are relatively cheap in terms of quality, it’s still worth the price. I would recommend this printer if you are capable of doing some fixes on minor issues and you have some 3d printer spare parts at home. After the issues have been taken care of, this printer still prints pretty well. I can speed up the print speed to 150mm/s with good quality, the frame and the linear rails on this printer are pretty nice, especially the frame since it’s very rigid. I believe it can print even faster IF I upgraded the stock extruder and hotend to better ones. But for beginners, if this is your first printer, I would suggest choosing an Ender-3 V2, CR-6 SE, Ender-5 Pro or Sovol SV01. These printers work so much better out of the box. They don’t require that much work to print nicely. If you are interested in these printers, you can check out my other videos. Since this printer has quite a lot of potential, I am going to make another video and focus on the firmware upgrade. I will compile a Marlin firmware for this printer. The dual Z-Axis and dual Z motors are not synchronized, so I will also show you how to use Marlin’s Auto Z-Axis align feature to get better bed leveling results and improved print quality. Affiliate Links: Two Trees Sapphire Plus CoreXY 3D Printer: https://s.click.aliexpress.com/e/_AsVfOq Creality REFURBISHED 3D Printers (SAVE up to 50%) https://bit.ly/3EGO2UR Used Ender-3 ($79) Maybe in bad condition, but if you know how to fix a 3D printer and have spare parts to replace by yourself, that could be an amazing deal: https://bit.ly/3LPnzHw Follow us on Twitter: https://twitter.com/aurora_lung