Pin and pinhole elements

Pins connected to pinholes.
Pins connected to pins.
Pinholes connected to pinholes.
Just pins. Just pinholes.

Each plate file contains about 24 / 48 parts.

It's for building structures and connecting two flat things.

For a Christmas tree decoration print the pinh_combine3.stl and assemble the 3 parts overlapping.

Found a similar Pin-thing from Tbuser:
http://www.thingiverse.com/thing:10288