Re: [CAD_CAM_EDM_DRO] Re: Re: CNC Etch-A-Sketch, EggBot

The most perplexing issue for me about this whole discussion is: Where do you guys find the TIME to draw on eggs or even think about it ???

I must have the wrong day job Again ! :-)

Chris L

Bill Vance wrote:

> Hi gang;
>
> This might be ok for making a decorative band around the egg, bu what about the
> ends? You have two totally different hemispheres there. Even though it would
> take two times through through, "the mill", some designs would be easier to
> implement from the ends, and maybe easier to hold the egg, too.....
>
> Bill
>
> On Sun Dec 30 08:46:02 2001, IMService, <imserv@...> wrote:
>
> >> Date: Sun, 30 Dec 2001 00:04:10 -0800
> >> From: Alan Marconett KM6VV <KM6VV@...>
> >>Subject: Re: Re: CNC Etch-A-Sketch, EggBot
> >
> >Alan I would think the easiest way to do the egg would be to treat it as a cylinder and have a spring loaded pen for the Z variations of the eggs surface.
> >
> >My second choice would be to digitize the form. One set of points along the longest axis would be all the probing needed, and then use an arc-spline of the points to create the template for the extrusion.
> >Draw the design in the flat, then use the extrusion template to create a 3D unrolled representation of the surface. You could then use the Z-A swap trick to develop the G-code for the surface, or else, use Vector's Wrap cylinder to develop the 3D surface, from which you could either draw X-Y-Z coordinates using about 1/4 of the surface and indexing, or else use the VectorPlus rotary 4th axis to generate the entire drawing path directly from the model.
> >
> >Best Regards, Fred Smith- IMService
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