If you want more information about this particular printer, I just finished a 26 video tutorial on building one from scratch. Including all the tools and parts you need and how to source them out. Also, I just created a Git Hub page that includes all the .STL files you need to download and print these parts, but I used a sturdier gear design. Check it out if you are interested. These printers are good because they have a very large print area for the price. and its a fun DIY project if you have step-by-step guidance. Hope this helps.