Thingiverse has been the go-to site to share 3D printable models since October 2008. There are thousands of models available to download and print for Free.
Just like this 3D Printable Jet Engine: https://www.thingiverse.com/thing:1327093
A larger model, with many components but very satisfying to print & assemble.
Thanks to Ben Wallace for finally putting this one together for us.