Re: How to convert a Grizzly 1006 Mill to CNC

--- In CAD_CAM_EDM_DRO@yahoogroups.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