[JimJames]

The 405th[1] and therpf[2] are the forums you want. The 405th has more schematics like you mention but therpf has a wider scope.

1: http://www.405th.com

2:http://www.therpf.com

Example: A gillion pepakura schematics for skyrim weapons and armours : http://www.405th.com/forum/armor-uniform-and-prop-making/noo...