Extracting From a Multi-Part .rar Archive (.part1.rar etc)

Archives are and have been very commonly used across all computing for over 20 years since the days of floppy discs, including massively in 3D printing for sharing and transporting of .stl and associated files. If you want to get into 3D printing, you will have to become familiar with archives. They are an accepted format for uploading by almost all services and have the benefit of compressing the size of the file within. A multi-part archive is simply a single archive split into multiple smaller parts (not multiple separate archives), they are not as common but are necessary only and as a direct result of Etsy's small file size limits, I do not have a choice about it. To extract your .stl file from a multi-part archive simply make sure all the parts are in the same folder and have not had their names changed in any way, then right-click the part1 archive only and click 'extract here' or other similar option. Only extract from part1, it will extract the entire file from across all the parts. Windows by default includes the Winzip program however it cannot extract from multi-part archives, you will need either Winrar (https://www.win-rar.com/download.html) or 7zip (https://www.7-zip.org/download.html), both are free and are the standard and best programs for using archives (I have both!). If you are using a Mac you will need to download The Unarchiver (https://theunarchiver.com/) from the app store in order to effectively work with archives, or Keka which is a similar alternative (https://www.keka.io/en/) and follow the same steps as above.