I know I'm probably going to get hate mail over this, I am seriously VERY disappointed in the quality of these products. I bought a 3D Printer EXPECTING having to mess with kinks and other problems, I was okay with it because I am a DIY'er. but the amount of work this thing takes is INCREDIBLE, for every hour of printing I'm working on it for 10. This is RIDICULOUS. The printer head assembly, the Z-Axis doesn't have a limit I guess, and it LITERALLY unscrewed itself from the rods at the top, yeah some may blame is my fault, if its shipping with Matter Control IT SHOULD HAVE A BUILT IN LIMIT, where It knows that it will unscrew itself, then while putting it back on, the TERRIBLE solder work on the cables that attach to one of the leveling switches literally fell off like they were BARELY tacked in the first place. I wish I would've bought a Solidoodle instead.