There are types of Cross Sections included at the moment (listed below).

Each file contains 1 half of a type of cross section.
So you need to print it twice.
You can then slide these 2 halves into eachother to create the complete cross section.

> Cross Section

As depicted in the photos.
You can attatch other Polypanels on the 4 sides.

> Cross Section - flip

Same as the Cross Section above. Except the connectors are flipped on one side. 

> Double Cross Section

Extra connectors added to the 3rd side (the side opposite the slit).
You can now attach other Polypanels on all 6 sides.

> Double Cross Section - flip

Same as the Double Cross Section above. Except the connectors are flipped on one side.

Possible future additions:

• Different widths (1/4, 1/2, ???)
• Different styles (vsolid, solid, open, edges)
• Triangle cross section?!