Re: RoboFac / Stewart-Gough Platform / Hexapod Milling Machine

> Wayne C. Gramlich wrote:
>
> >Whenever I read one of these CNC articles in a magazine,
> >the first question I ask is "How accurate is the machine?".
> >To date, the Robofac article has not discussed accuracy.
> >For the amount of money he spent building the thing, I
> >suspect he could have purchased a Sherline/Taig table top
> >unit and done a quite straight forward CNC conversion.
> >Again, it is hard to tell because he does not discuss
> >prices to any level of detail.
> >

Wayne,

I think that you've got good points on both accuracy and the ability
to make useful items - especially when build cost is compared to
other [more conventional] alternatives. On the other hand, what
attracted me to the RoboFac article is the fact that it is "way
cool"!

Part of the reason I engage in this hobby is that it stretches me
intellectually (and sometimes financially!). The other reason is
that I'm working closely with my 14-year-old son and I'm hoping that
he's picking up concepts like "parallel kinematics" and solving
the "forward kinematic problem" in a parallel system.

Greatly enjoying this discussion and I'm glad there are others
interested in sharing thoughts.

Finally, I'm most concerned that I haven't received the most recent
issue of Servo yet!

Bob in Florida