Greenhouse: Building a geodesic dome greenhouse, 1 by tropicalaria

tropicalaria wrote:
Next, I traced out a pentagon onto my tarp in the same way had done the previous pieces, including the center cut. In reality, no sliver is cut out of the pentagon--it is just a single cut where the plastic increasingly overlaps outward from the center, in the same way you might make a cone out of a circle with a radial cut in it.

This piece was poked up through the center and positioned around all of the edges and along the cut. Note that on all of these pieces the position of the cut on one of the struts is vital, since the overlap is very small in the middle. Also, except for this top one, all of the center cuts have to be overlapped so that they shed water downwards.