# [Icehouse] Re:

• FromDavid Artman <david@xxxxxxxxxxxxxxx>
• DateMon, 05 Mar 2007 11:30:27 -0700
```> Quibbling:  Stackability and therefore wall thickness are relatively
> new.  Remember, old skizool icehouse pieces were solid.
> So you might have the what, but probably not the why.

Good point...

So how was the original, solid medium's size determined? As the median
between the small and large base?
Seems so: (1 + 9/16) / 2 = 0.78125 = 25/32

And, thus, wall thickness became
"forced" to be--at most--0.21875? Which, divided by two, give you the
wall thickness (actually, it gives you the length of the wall thickness
along the horizontal; the actual wall thickness must be derived using
half the angle of the peak and some trig).

So, yeah, I'm off on the history, but I still think the method is

What would that be, as a formula?
For any give pip value X:
Base = (Base of X-1) + 0.21875
Height = ???
(I can't find out how to derive the angle from Height and Base, and so
I can not find how to use some trig function of that angle with only
the Base, to determine the Height after the above simple addition.
Anyone here know all that stuff?)

David

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