Re: Plans for dirt cheap etcher?

Actually I was going to use a dremel clone or maybe a hijacked
cordless screwdriver that has a spindle replaced on it.


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Chuck Merja" <chuckm@...>
wrote:

>
> What are you going to run for a spindle? Seems most printers

don't have a

> bunch of power, and to run steppers open loop, if underpowered

might not be

> a satisfactory implementation.
>
> I am toying with doing something similar. I have about a pickup

load of

> printers, faxes, PSC etc. I haven't taken all apart yet, but some

HP's run

> a DC motor with an encoder wheel for paper feed and linear encoder

for

> across paper travel. Whereas, a Lexmark had 4 wire steppers in

both places

> and no encoder strips/wheels.
>
> The Lexmark is stripped down to a place where it would feed a

single sheet

> and still do across paper travel. But if I were to use as an

etcher of

> something more rigid than paper, I'd have move that whole printer

frame - or

> my version of it - lots more inertia there than the stepper was

designed to

> move. Or do you have a different idea??
>
> Chuck Merja
> www.3rivers.net/~chuckm/index.htm
>
> Lemelson-MIT Inventeams - http://web.mit.edu/invent/n-main.html
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> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of krashking405
> Sent: Sunday, May 14, 2006 4:33 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Plans for dirt cheap etcher?
>
>
> I've started to scrounge up parts finally. I have gathered 2 HP
> printers, and an Apex flat bed scanner. Out of these I've

collected 5

> steppers, some rods, a few cogged belts, a BUNCH of optical

switches,

> and a handful of other odds and ends. I found the data sheets on

the

> steppers, but I don't understande the torque charts. Can someone

help

> me? Here are the links: M42SP-4
> <http://www.mitsumi.co.jp/Catalog/compo/motor/m42sp/4/text01e.pdf>
> PM35S-048
>

<http://www.eminebea.com/content/html/en/motor_list/pm_motor/pdf/pm35
s04\

> 8.pdf> PM55L-048
>

<http://www.eminebea.com/content/html/en/motor_list/pm_motor/pdf/pm55
l04\

> 8.pdf> . Thanks!
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
> <dave_mucha@> wrote:
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "krashking405"
> > krashking405@ wrote:
> > >
> > > Ok, this seems to be the earliest thread before the hijack ;).

Found

> > > a perfect setup from k2cnc.com, something like this built of

MDF or

> > > plywood would be perfect. Anyone have planes, or even a 3 view

of

> > > something like the small setup there?
> > >
> >
> >
> > Assuming you want a PCB router, and will use a Dremel, you can

make a

> > dremel holder.
> >
> > check E-bay for 'linear slide' these are small ball slide units

that

> > you can find with anything between 1/4 inch and 6 inches of

movement.

> > run about $35.00.
> >
> > Very easy to make that into a Z axis.
> >
> > then look at
> > http://www.crankorgan.com/pics.html
> >
> > and get some ideas.
> >
> > the one that uses a pipe for the column is one I kninda like.

only, I

> > would use two flanges on the base, and a Tee on one post and an

elbo

> > on the other. That would dramaticcally increase stability of that
> axis.
> >
> > if you are just starting out, then look at lots of machines to

see

> > what is easy for you to make. sometimes you have tools or skills

that

> > make something easier than what others might be able to do.
> >
> > Dave
> >
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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