On Sat, Sep 8, 2012 at 10:16 AM, Gerardo @neorigami.com <[email protected]> wrote: > > > IRIS CLOSURE: Named by Philip Chapman-Bell. It would be an overlapping > succession of lifting folds. A series of boxes of equal size are creased > across the paper. Each box must be divided by a diagonal crease mark > between the same opposite corners. The direction of the diagonal creases is > opposite to the direction of the straight creases between them (diagonal > valley - straight mountain folds or vice versa). The paper is made into a > roll, then the boxes are flattened and twisted following their crease marks. > > If the twist fold is for high intermediate folding skills then the iris > closure is for a mid intermediate skills. It's easier to fold. > > One example is Spring into Action by Jeff Beynon, where a number of iris > closure folds are made one next to the other.
Someone correct me if I'm wrong, but I think that Philip Chapman-Bell and others who use the stacked iris fold you described have already come up with their own nomenclature for that class of origami. It might be worthwhile to contact them directly to ask about it. -- -- Gareth Chen
