Re: [CAD_CAM_EDM_DRO] Re: Do Learn Build

Ballendo, those are some good points. Some I could even stress for novices
when building one of my Dream Machines from scratch. Start with lead screws
made from threaded rod (saves money on original build and reduces cost for
learning curve) and is easy to upgrade to a more accurate machine by simply
changing the lead screws.

Smoke

>As Jon E said, you CAN do it. But he was talking .001, and you're
>at .000001 !!!
>
>I have found that most people new to "the CNC thing" tend to over-
>spec their needs... And confuse resolution with accuracy...
>
>A plus or minus .001 machine will be MORE than enough for nearly ALL
>wood and plastic work. In fact, if the machine is in an unheated
>area, even this will be wasted. The reason is that the material
>itself is moving (due to humidity and temperature) more than the
>machine accuracy. You will then have to 'relax the tolerance' on your
>cuts (make an inlay .005 or .010 smaller than the pocket) just so you
>can get things to fit together...
>
>I am reminded of the many times I have seen "new" people come to play
>tennis or golf. They've got the best stuff (clothes, raquets, clubs,
>accesories) and they can't play! And they want to "play from
>the 'blue' tees (expert level in golf)so they can 'experience the
>game as the pro's do..." What they usually experience is frustration.
>The Japanese have a tradition of being sure the worker is "up to" the
>tool. A harsh, but realistic view. A micron capable machine
>could/would? easily be destroyed by a novice, who might not even
>realise he or she had done anything wrong... Better to walk, then
>run, IMO.
>
>The other side of this is getting 'enough' tool to do the job. A
>novice will not have the ability to "work around" a poor tools'
>problems...
>
>This is the classic problem, and there is no easy answer. Look for
>clues in what people doing WHAT YOU WILL BE DOING are using, and
>resist the temptation to just get a "little" more. And since we're
>now so close to the "next" level, why not just... Ask LOTS of
>questions. LISTEN to the answers (DO consider the source).
>
>Hope this helps.
>
>Ballendo
>