Step 7: Vents and Door
Vents can be cut into a triangle with a flap to cover the hole and a stick to prop the flap. Make a BCC #1 or BAA #10 for the flap. The flap is removable using velcro so that it doesn’t get crunched when the segment is folded. The flap for the vent is held open by a thin bamboo garden stick, with the nodes of the bamboo serving as convenient stops for holding the flap up. I made a small notch to hold the pole at the vertex of the opening. On the triangle with the vent hole, you will need to adjust where you score your B edge in order to make room for the second tab of the cover flap. This is a good step to practice on your cardboard model first.
The door is a variation of one of the base hexes, and it is actually detached from the neighboring half-hex. You will cut the 9-piece segment for the door a little differently from the other 4 - see the diagrams and the cutlist. The hinges are made to allow the door to fold up and out for a diamond-shaped entry - no crawling to get in. To give structural strength to the doorway, 2 of the 6’ poles get re-purposed into supports, and extra clips are placed on nearby tabs. Extra tape around the joints on the outside also helps.