The repository how hosts an incredible range of STL files that you can download for free, with no registering necessary. One of the largest free STL file sites in the world, Thingiverse was first set up by 3D printer company Makerbot back in 2008 so users could upload their 3D printer model designs for the world to download and print. Part 1: Sites Hosting Free STL Files Thingiverse - Largest selection of free STL files
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