Re: [CAD_CAM_EDM_DRO] First machine/plans recommendation?

On Thu, 17 Jul 2003 02:18:40 -0000, you wrote:

>When I started woodworking, I read everything I could on table saws.
>I fretted endlessly about getting the "wrong" tablesaw and wasting
>$1000 or so on a lemon. It seems everyone had 45 different ideas of
>what a "must have" feature for a saw would be.
>
>Then I had a brilliant idea. I went out and bought a delta benchtop
>saw (the "toy" ones for about $100) and learned the basics with it.
>As I found faults, I searched for "fixes" on the net, in magazines,
>and from watching "Nawm". At the end of three months, I knew exactly
>what I "had" to have in a saw and purchased a Delta QT-10. Not the
>most expensive (actually in the low budget range) but fits me to a
>tee. No wasted money, no regrets.
>
>I'd like to approach CNC in a similar fashion. One big difference is
>that I want to build my machine, not buy pre-made. This first
>machine doesn't need to be accurate to 0.0000000001 mm. It doesn't
>need to be able to mill cobalt at 6m/second either :) It just needs
>to be able to show me all the basic elements of CNC machining.
>(Like, what the hell is a ballscrew!) I'd prefer not to have a
>complete dog of course, but I'm "fault tolerant". If you've ever
>used one of those plastic benchtop saws, you'll understand what I
>mean! Small is better, the less money I have to put into the
>learning machine, the better.
>
>I'd like to hear from anyone that successfully built a small machine
>from scratch. Preferrably ones that didn't have part sourcing
>problems :D WHich plans did you get? Which controller? I don't care
>if it was less than stellar, tell me anyway :D

Bits and pieces are documented on www.netcom.com/~madyn go to
electronics then xyzr table.

The whole thing is built, and is running off a laptop. Considering
that the only thing I did not build was the laptop, the stepper
motors, and the linear and ball bearings (and leadscrews), I suppose
it would be home brew enough. Machine has roughly a 7 inch cubical
envelope, 4 axis (x, y z, and r). Mods are still in process, though.

Harvey

>
>Thanks!
>
>
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