Building router, what to do with 4th axis

I am designing my router right now. My electronics support X,Y,Z and A
axis. I would like to use the A axis, but don't know how or what to use it
for. Most of my cutting will be flat sheets, but the 4 axis is interesting!

Any ideas!

Mike Hammel
1704 Bullard
Arkansas City, KS
67005

----- Original Message -----
From: "industrialhobbies" <admin@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, November 25, 2003 4:49 PM
Subject: [CAD_CAM_EDM_DRO] Re: For the surfboard guys


> Unless you have a 4th axis to rotate the board you'll be wasting your
> time with CNC. You will find two things to be true.
>
> 1. Once you go from a block of material to a free form shape you
> will never be able to hold it in the proper position.
>
> 2. The second you unclamp anything or remove it from a referenced
> axis you will spend a huge amount of time getting it referenced again.
>
> The key to any CNC application is to let the machine do as much work
> as posible in a single shot.
>
> so, back to the design part.
>
> Ditch the "table" and mount a rotary axis in it's place.
>
> We're wandering into off-limit take though, if you want contact me
> offline at admin@... and we'll continue this.
>
> Thanks
> Aaron Moss
> www.IndustrialHobbies.com
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "surfbuilder2003"
> <mek0002@a...> wrote:
> > Hello Aaron,
> >
> > I am trying to put together one of these tables. This project will
> be
> > long running as I am very new at cnc. Basically this is the first
> > time I have heard servo or stepper. I am only building my table as
> a
> > 3 axis and plan to turn the board over once one side is cut out.
> Does
> > this sound prctical? I cant image being able to afix the board so
> it
> > wont move but also have it rotate to cut all sides. What do you
> think?
> >
> > Mike
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "industrialhobbies"
> > <admin@i...> wrote:
> > > Got a couple of questions:
> > >
> > > I'm guessing that since your making a 3d product (surfboards)
> your
> > > both making table-less gantry's i.e. no actual table just a open
> > > space in the center. A 4th axis would run parallel to the X-
> axis.
> > > This axis would rotate the block of foam to expose all sides of
> the
> > > foam to the cutter. Is this your idea?
> > >
> > >
> > > Next question
> > >
> > > How long should it take to cut out a board?
> > >
> > > That's all.
> > >
> > > Thanks
> > > Aaron Moss
> > > www.IndustrialHobbies.com
>
>
>
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