Re: my CNC research project

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "alexander samuel borsody"
<borsodas@...> wrote:

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "alexander samuel borsody"
> <borsodas@> wrote:
> >
> > hey group, I'm a technical writer and researcher for

thomasnet.com,

> > I've been lurking here on the forum trying to keep up with the
> > discussion. I am an sculpture and am currently looking into

building

> > my own CNC for under 2 thousand dollars. Because of this, I'm
> > currently writing an article on DIY, CNC, and am interested in

what

> > people think are the most important things to cover, I'm

interested in

> > affordable plans and machines, as well, the essentials, of

homebuilt

> > as well as desktop CNC. Anyone who can offer info, please help!
> > Preferably were trying to put something out there that would be

useful

> > and or unique, not just a copy of something you can find anywhere
> >
>
> I meant to say that parametric programming is being used more in
> recent days.not that it is a recent advancement.
>
> am I leaving anything out?
>

i don't think you'll find parametric programming on pc based cnc
programms, pc cnc controllers are made to make life easy.
I did work with industrial controllers that uses that such as
FAGOR, and it's very usefull for simple tasks like programming a
taper wall milling, or making pockets, but when it comes to more
complex geometry then a cam is needed.
Eaving Fagor controllers has grafics or a mini Cad/Cam built in to
help programming.
In production works all the programming is done by hand as you can
make a more efficient programm that way and save time during the
manufacturing process, so , you losse some time programming , while
the machine is running some other parts, but you save machine time
on the long run.
I'm not a big fan of parametric, no matter how good someone did
the parametric stuff, it takes far less time to draw and to
generate the cnc programm with a cad/cam software that's becoming
cheaper and cheaper these days.
You can build a cnc milling for less then 2K but don't expect to
have that 200 in/min and 0.001" accuracy.
I did find out that accuracy comes to be exponential in price.