It is accrued intolerance. Unless you are within at minimum +/- .005" of a inch, you will start having major problems. I would start with the polar triangles, as there will be fewer, and any adjustments can be more easily fixed, as you work your way to the equator, there are larger triangles, and the intolerance becomes easier to fix.
When I fix violins, this issue comes up all the times, as some luthiers think it is an art form, when it is an art form, and a craft. The art is in using the craft to get the best tone ut of the violin, the craft is in adjusting the height of the bridge to the style of the person playing. Someone who presses hard and goes through 3 bows per performance, i.e. Charlie Daniels, has to have a very high bridge and much space between the strings and the fret board.
It is also like skinning the hull of a ship. You start at the bow and stern, as the middle pieces are easier to fix, as their shapes are usually much more simple (not a strip planked, but modern hull).
If you put ink on the edges of the sphere, and rolled them on paper, you would have the exact shape, but this is the perimeter, and does not account for the compound curve. This, mathematically is Non-Euclidean geometry, where the angles of the triangles can never add up to 180 degrees.
p.s. In a Dyson sphere, the sphere itself would create a gravitational field, and it's size would probably create a situation of crushing gravity! Even asteroids have gravity, and some are very small, but are solid metals.