Pointing machine

[abknight@zzzzzz]

Hi Simon,

I think I've mostly got it.

First on your model establish three points around the base
and a fourth at its highest point.

Carve the base plane of your carving block(which you are
going to need to do anyway to set your stone up and start
working).

Establish three points near the base of your block that
are proportionaly congruent with the ones on the model.
Use Rovai's method of finding the proportional lengths for
your calipers.

 From these three points you can find your top point and
you are off to the races!  Want to find the belly button?
You can now use the top of the head as one of your
measuring points, though I would suppose you would want to
find elbows and shoulders first.

Rovai's description of "falling" I understand I think.
"Centering" or measuring into a depression I will have to
read again.

I think of your sphere carving exercise.  Instead of
squaring up a cube and then reducing that all away, you
could establish two points the wanted distance apart on
either end of your stone and using two calipers desrcibe
an equater.

There certainly seems to be alot of picking up and putting
down of calipers involved in all of this.

Bill