Re: Laser cutting while in motion
If you look at it mathematically, I think the path described by the laser would be a rotated ellipse, the parameters of which would change with the speed of the cloth through the machine. An Excel spreadsheet might be able to generate the G code to run the laser.
EDIT: In thinking about this a bit, it would seem to me that given the small mass of the laser and material involved, moving the entire laser machine along with the cloth while cutting the circle, then making a rapid move back to the start position for the next cut, would make sense. This could be done pretty simply, possibly even purely mechanically, with a minimum of controls and hardware. The alternative might be a rather expensive motion controller and some custom software.
Jim Dawson
Sandy, Oregon, USA