Half term fun – building a geodesic dome, Part III
Posted by markharrison on October 25, 2007
Following the success of Dome I and Dome II earlier in the week, we decided to make a more complex dome.
Both Dome I and Dome II are what’s know as 2V domes. The notation was introduced by Buckminster Fuller, who developed a version of the dome in the States in the 40s. (The dome was originally invented by Walther Bauersfed for Carl Zeiss, and the first was built in 1922)
Dome III was going to be more complex – it is a 4V dome. Wheras the 2V domes each had 65 struts, the 4V required a total of 250.
This time round, we learnt from the previous two construction jobs – the struts were made of rolled, reused paper, a whole bunch from a company that was renamed, plus a set of printouts from a failed mailmerge for Mog007. This time, though, we used the “short side” of A4 (21cm) for the longest struts. Again we used butterfly fasteners to put it together. However, this time, we used a bit more Scotch tape, so that most of the struts were completely covered, rather than just using it
“along the join.” This has given them a bit more rigidity, as has the fact that we’re using the shorter side, and therefore each roll has a “long-side’s worth of paper” in it. Drilling them took quite a while.
The net result, though, is a dome that is just big enough for me (if I curl up.) The children have, of course, loved it – they can both fit in easily, and have spent the last 15 minutes watching TV from inside it🙂