Re: http://www.cncmotion.com/

Peter, probably just as quick to program these by hand.
Then run that code as a subroutine over again to produce the right
number of spirals.
I see they are agents for Bobcad so they probably use this but having
used Bobcad I stick by my comments above.
A simple spiral program will look like this

N** Z -0.2 F 5.0
N** X 10.0 A 20.0 F25.0

Where the first line feeds the tool into the work and the second line
moves along 10" whist twisting thru 20 degrees.
You then retract the tool, move back to the start in X and index
round to the next position and repeat.

John S.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "forumtvm" <forumtvm@y...>
wrote:

> Hi,
>
> Anyone knows what cam system (or how to manually program) a lathe

to

> produce those beautiful wood turnings featured in the cncmotion site
>
> http://www.cncmotion.com/
>
> in the cnc lathe section?
>
> Peter