RE: [CAD_CAM_EDM_DRO] Re: Plans for dirt cheap etcher?

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

US FIRST Robotics - http://www.usfirst.org/
lat/long 47.52383  -111.67912
211 Adams Rd
Sun River, MT 59483
vx   406.264.5955
cell  406.799.5955
fax   406.264.5830


-----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/pm35s04\
8.pdf> PM55L-048
<http://www.eminebea.com/content/html/en/motor_list/pm_motor/pdf/pm55l04\
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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