Re: ATM Another parabolizing stroke question

["Dan Chaffee" <dchaffee@gvi.net>]

It can also be, as your friends may have told you by now,
a function of the softness of the pitch. If it's too hard,
a true paraboloid never really forms and you end up with
a central hole with several zones as you appraoch the edge.

good luck,
Dan

> 
> I started with a full parabolizing stroke, leaving me with an
overcorrected
> center and a spherical edge.  I then shortened my W stroke to almost
center
> over center which improved the center but left me essentially with a hole
> that extended out 70% of the way.