Here is a great starter list of parts for your Wanhao Duplicator 4S and 4X printers that are 3D printable. These parts have been sourced from different sites and designers around the web. Downloading, installing, and/or using these parts is to be done by experienced users with the knowledge that you can potentially damage your machine if you are using a part or component not included with your original printer purchase. Use of these files may result in a voidance of your limited warranty with Ultimate 3D Printing Store. We are not responsible for damage or malfunction of your machine by downloading, installing, and/or using these parts. .