Maybe I'm not "caught up" enough on the discussion to contribute, but I though the whole ratio of pyramid dimensions is based on the fact that a small height = a large base width? All other dimensions are "derived" or "necessitated" by the thickness of the molds: (1" - 25/32") / 2 -OR- (25/32 - 9/16) / 2 ...both of which equal 0.109375 "wall thickness". SO, for any piece size, one would have to simply add 0.21875 to the base of the previous piece size, and use the same angle for the peak, to derive the new height (using the trig for an isosceles triangle). But I'll admit that I am no mathematical scholar. I just observe that the series is all about increases the bases and preserving the peak angle, for stackability. Am I crazy, ignorant, or what? David