Site for lots of really neat free papercraft files

jespratt

I don't know if this site has been posted in the past, but I have gotten a lot of free files from here and check it regularly as they periodically add new ones. They all come in pdf format and require a little bit of work sometimes to convert them into into MTC, but I find the results are worth it.

Canon Creative Park
http://cp.c-ij.com/en/index.html

Crazy_Mr_Zing

Yes Canon Creative park has some good files
in the past they have commissioned some great papercraft artists to create files 

Rob Ives's being one https://www.robives.com/