Re: [CAD_CAM_EDM_DRO] Re: How to convert a Grizzly 1006 Mill to CNC

I buy from ebay in the uk and the us all the time.
If you want some motors, I have 4 left of 3 Nm or 425 oz-in for 59$
each, 25 $, to ship them to you in sweden, takes about 4-5 days.
These are of the very best quality, brand new, unused, dual shaft.
I am very very impressed with them. If you want some email me directly.

One good option:
Buy 2 breakout boards from arturo duncan in the us. The optically
isolated ones, c11 for 105 $ and the c1 for 60$.
The multifunction board c11 will let you put the on / off switch direct
from the board to your router. It has other advantages, is very good,
and cheap. I like mine.
http://www.cnc4pc.com/Store/osc/index.php

You need 2 breakout boards and 2 parallel ports because you have very
limited number of input switches on the parallel port.
I recommend a pci card with 2 parallel ports, any pc store, any make,
about 20$.

What do we need and want for inputs on a router.
1.x-axis plus and minus limits, one shared as home
2.y-axis plus and minus limits, one shared as home
3.z-axis plus and minus limits, one shared as home
4.emergency stop
5.spindle speed index for accurate rpm input (you may want to get the c3
card for 23$)

Possibly, either/or or both
x-axis mpg
y-axis mpg
x jog +/-
y jog +/-
z jog +/-

The last ones depend on what and how you are making things.
Some need them, many don´t, it really depends on what and how you make
stuff.
You may want separate optical homing switches, this also depends on what
you make and how.

> --- In CAD_CAM_EDM_DRO@yahoogroups.com
> <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>, hannu <hvenermo@...> wrote:
> >
> > Stephen has already responded, I am (maybe unnecessarily) trying to
> > spell it out.
> >
> > The 48 psu is 48 volts, dc, Power Supply (Unit) . The capacity of
> your
> > power supply is related to the size of your motors. Basically, if
> you
> > have 3 200 watt motors, you need 2/3 * motor power (motor power = 2
> *
> > 200 watts) = 2/3 * 400 watts = 270 watts, quite small really.
> >
> > A clean, safe filtered commercial power supply is a good choice,
> from
> > ebay, as 48 volts is common and cheap. If its a bit too big, don´t
> > worry, it won´t hurt anything (mine is 3000 watts !).
> > You can also make one. I use one I made for my mill (68 V). Its not
> too
> > difficult, but its more trouble than it´s worth, but not too
> difficult,
> > but a bit risky (dangerous) so ...
> > Seriously, my commercial supply´s don´t interfere with radio and tv
> > reception, have excellent grounding and low rf (radio frequency)
> noise,
> > so I recommend to everyone they buy one, as long as they can get
> one
> > near to their needs. This is the best option. If you are really
> short of
> > funds, build one, or you really, really need (want) 68 volts, or 78
> or
> > something, buy all means build one. You are unlikely to achieve
> > filtering, smoothing, soft start, bleeder caps, failsafe against
> > short-circuit etc. Some people on these lists could make one like
> that
> > (I am not one of them), but its just not cost effective. If you
> just
> > need a big psu, build one of the 3 piece designs, I also use one,
> and
> > they work just as well, only with rf noise.
> > FWIW - I need about 7 power supplies so far to run my machines, and
> the
> > number is growing alarmingly ...
> >
> > A breakout board is what the cable from your parallel port connects
> to.
> > It has buffering and isolation and terminals to connect your
> machines to it.
> > You can get one from cnc4pc.com (c1, c10) or from bob campbell
> (sound
> > logic), or from others.
> > I use cnc4pc cards, the guy who runs it, Arturo Duncan, responds
> well to
> > mails and supports his products, they are good and cheap.
> > e sound logic bob is also a known good product, with lots of
> satisfied
> > customers. No personal experience, but I would also recommend it as
> an
> > excellent choice, as they have large user base/review, no
> unsatisfied
> > customers, and were early on the scene.
> > You need one for b-o-b each parallel port.
> > I highly recommend a separate dual parallel port pci card in your
> pc.
> > About 10-20$. If it works, but 2 extras. You will want to have many
> > inputs, and thats the way to go. Cheap, easy, reliable. Using a
> > separate card is a much better option than your pc port. Your
> choice.
> > There are many excellent reasons for this, but your pc port will
> work
> > just as well.
> >
> > Don´t worry about asking. A proper, polite question is usually
> treated
> > well, it´s only the questions like "how to I build a nuclear fusion
> > reactor" that get treated with silence ....
> >
> > >
> > > Hi hannu
> > > Sorry for a newbie breaking in but what is "48 psu" and where can
> i
> > > find it and what does a breakout board do and where can I find
> those?
> > > Hope I am not posting wrong here but picking up knowledge where
> ever
> > > I can find it for my own build.
> > > regards
> > > perolalars
> > >
> > >
> >
> Hi again
> And thanks for the reply, I really appreciated it.
> About the parallel ports, why would i need more then one? I am
> building a 3 or 4 axis router, for milling hardwood, foam and maybe
> soft aluminium, with X=1500mm Y=1200mm Z=400mm travel and
> unfortunatelly I am located in Gothenburg Sweden so I cant use ebay
> and the store that sell motors etc is not that many and tends to just
> sell the very very best quality (very very expensive, nema 23 with
> integrated electronics $770).
> And what is b-o-b? You have to forgive me but my american shortening
> knowledge is limited.
> I will as you recommends buy most of the electronics but I am having
> a hard time findig out what i need, so if you could describe a good
> setup for a machine in this way?
> And I am actually thinking of buying from the US because of the price
> tag and because the swedish krona has getting better.
> So if you have a spare time over....
> And about the nuclear fusion reactor now that you mentioned it...;)
> Best regards
> perolalars
> but now its late and its beddy time hope I`l hear from you in the
> morning
>
>