On 09/28/2013 09:09 PM, Robert Ellenberg wrote:
> Thanks for the explanation! if we're lucky, such a feature wouldn't take a
> separate optimization, since the forward and reverse trajectories have the
> same speed and acceleration bounds. Once lookahead is implemented, It
> sounds like a good feature to attack.
>
> -Rob

  This maybe of importance, but only in the narrow WEDM view. The fwd 
velocities are in tens of mm's per minute. Its a very very slow process. 
Accels will also be surprisingly small. The reverse velocity will be 
faster but still very slow compared to traditional chip removal.

  It called called erosion, and that describes how fast it is. Speeds 
are measured in parts of a grain per minute or cubic inches per hour.( 
one grain is  64.79891 milligrams , think grain of wheat as the unit, 
and some small part of that is removed in a minute by efficient WEDM)

  So dont assume the fwd and rev speed and accels are the same, but, 
dont worry too much about it either.

thx TomP

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