> LLRR definitely wouldn't work. But LRLR will
still tend to stray from
> the vertical because the sloping tops all slope the same way. That is
> why I suggested LRRL. This zigzag reverses the sideways displacement
> that occurs in each pair of layers, thus rising vertically and being
> therefore more stable than LRLR.
To flog a dead camel, and carry forward a pointless
thread, I still don't
see how LRRL is any superior to LRLR. LRRL would be noticeably crooked,
and might not even stand.
Try to thing 3D not 2D - it is not only the level, but also the position.
Giveme your faxnumber.
Gruss
H.
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Ich denke, also bin ich, also gut
HRK