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Many peole have built my stepper motor drivers. I posted all
schematics and artwork for free...

Best Regards
Hans W

Now, let's not all get cranky. No pun intended. Well, OK, pun
intended.

Moderator

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Tony,
You should also say the $18 included shipping and handling
to your country. You left out your shipping but I still shipped.
One year has passed. I have designed several more cheap CNC
machines for hobbiests. Have you finished your book on milling
circuit boards? A year is a long time!

John



--- In Homebrew_PCBs@y..., Tony Jeffree <tony@j...> wrote:

At 16:53 01/04/2002 +0000, you wrote:

You can mill circuit boards using a homemade machine and
a Dremel type tool. I use a Dremel set on number 3. My feed
rate is 6" per minute. I have a picture at:



Of a board milled by my machine.

Any Questions, I will answer here in this conference.

...and I see you are still charging $18 for your thin little

booklet too.

To potential purchasers of this booklet...as far as I can tell from

having

paid $18 to read it, it doesn't say anything that isn't already

available

for free in the archives of this group, or via the various other

links that

members of this group have posted.

Regards,
Tony

At 16:53 01/04/2002 +0000, you wrote:

You can mill circuit boards using a homemade machine and
a Dremel type tool. I use a Dremel set on number 3. My feed
rate is 6" per minute. I have a picture at:



Of a board milled by my machine.

Any Questions, I will answer here in this conference.

...and I see you are still charging $18 for your thin little booklet too.

To potential purchasers of this booklet...as far as I can tell from having paid $18 to read it, it doesn't say anything that isn't already available for free in the archives of this group, or via the various other links that members of this group have posted.

Regards,
Tony

Hi,
You can mill circuit boards using a homemade machine and
a Dremel type tool. I use a Dremel set on number 3. My feed
rate is 6" per minute. I have a picture at:



Of a board milled by my machine.

Any Questions, I will answer here in this conference.


John

--- In Homebrew_PCBs@y..., "Tim Goldstein" <timg@k...> wrote:

No, your question would not be considered off topic on the
CAD_CAM_EDM_DRO group. It directly deals with the design and

building of

a hobby CNC machine.

Thanks Tim, thats good to know.

No direct experience with anti-backlash acme screws or a machine

based

on linear bearings and rods, but I have done some PCB drilling on my
Shoptask and on my Bridgeport. My resolution was on the Shoptask at

the

time was .00025" and that worked out just fine. I would actually

venture

a guess that you could get by with resolution in the .0005" - .001"
range.

I've been doing some searching (see links below) and although I
havent yet found many Hobby PCB Routing/Drilling sites but the
commercial ones gave me some needed info. One unit that sells for
$6k+ uses 0.00025" resolution and says MIT, NASA, ATT... use their
products. With that in mind I agree that 0.0005" to 0.001" resolution
would be fine for hobby use. I'll probably start using the Gecko 201
drives I bought from you (10 microstep, info for others) and then use
it to make my own Drivers (probably L298 based) for this unit. It
will probably double as an engraver. Something else to play with. :)

I've also been emailng with Alan Marconett KM6VV whos also a member
of both groups.

For the spindle I am a big fan of using a collet style Foredom
flexshaft hand piece. This lets you mount the motor remotely so you

have

a small light spindle on the machine and gives you a spindle speed

of

15,000 - 20,000 RPM depending upon the motor and handpiece you use.

It

worked well for me when I used one in my Shoptask. I am now using a
Precise 40,000 RPM spindle in the Bridgeport and that works even

better,

but can be a little spendy.

Tim
[Denver, CO]
Back-up CAD_CAM list mom

This is more of a For The Fun Of It Project and won't see a lot of
use so i'll be sticking to the RTX. But I agree that for frequent use
and greater speed the Foredom Flexshaft would be a much better option.

This project is also to get some Hands On experience with CNC,
Stepper Motors, Linear Motion, CAM Software... before I build my CNC
router, which is the reason I bought the Gecko's.

Thanks
mike








Links at bottom for more

No, your question would not be considered off topic on the
CAD_CAM_EDM_DRO group. It directly deals with the design and building of
a hobby CNC machine.

No direct experience with anti-backlash acme screws or a machine based
on linear bearings and rods, but I have done some PCB drilling on my
Shoptask and on my Bridgeport. My resolution was on the Shoptask at the
time was .00025" and that worked out just fine. I would actually venture
a guess that you could get by with resolution in the .0005" - .001"
range. For the spindle I am a big fan of using a collet style Foredom
flexshaft hand piece. This lets you mount the motor remotely so you have
a small light spindle on the machine and gives you a spindle speed of
15,000 - 20,000 RPM depending upon the motor and handpiece you use. It
worked well for me when I used one in my Shoptask. I am now using a
Precise 40,000 RPM spindle in the Bridgeport and that works even better,
but can be a little spendy.

Tim
[Denver, CO]
Back-up CAD_CAM list mom

--- In Homebrew_PCBs@y..., Russell Shaw <rjshaw@i...> wrote:

n4onl wrote:

Hi everyone.
Just found this group and I have been skimming through the posts.
I'm interested in building a CNC PCB mill/drill. Stepper motors,
linear bearings/rods, antibacklash nuts on Acme rod... and a Black
and Decker RTX. The resolution works out to 0.0005" per full step

and

0.00025" if I half step.

Is 1/2 or 1/4 of a thousands a good resolution for this project?

Does anyone have links to similar projects?

Hints? Tips? Insight?

There's a home-brew cnc yahoo group: cad_cam_edm_dro.

I found this group from a post in CCED. I hoped I'd get info here
since Bill (list mom) might consider this Off Topic in that group.

Thanks
mike

n4onl wrote:

Hi everyone.
Just found this group and I have been skimming through the posts.
I'm interested in building a CNC PCB mill/drill. Stepper motors,
linear bearings/rods, antibacklash nuts on Acme rod... and a Black
and Decker RTX. The resolution works out to 0.0005" per full step and
0.00025" if I half step.

Is 1/2 or 1/4 of a thousands a good resolution for this project?

Does anyone have links to similar projects?

Hints? Tips? Insight?

There's a home-brew cnc yahoo group: cad_cam_edm_dro.

n4onl wrote:

--- In Homebrew_PCBs@y..., Russell Shaw <rjshaw@i...> wrote:

n4onl wrote:

Hints? Tips? Insight?

There's a home-brew cnc yahoo group: cad_cam_edm_dro.

I found this group from a post in CCED. I hoped I'd get info here
since Bill (list mom) might consider this Off Topic in that group.

That's how i found this group too;)

Hi everyone.
Just found this group and I have been skimming through the posts.
I'm interested in building a CNC PCB mill/drill. Stepper motors,
linear bearings/rods, antibacklash nuts on Acme rod... and a Black
and Decker RTX. The resolution works out to 0.0005" per full step and
0.00025" if I half step.

Is 1/2 or 1/4 of a thousands a good resolution for this project?

Does anyone have links to similar projects?

Hints? Tips? Insight?

Thanks
mike

--- alienrelics <alienrelics@...> wrote:

Found a cool link- how to build a $20 hot air pen for soldering
surface mount!

Try this under "Soldering hints and tips":

Here's the Rat Shack $10 desoldering pen he mentions:

I'm off to Rat Shack!

Steve Greenfield

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Here is a link to building a Hot Air Pencil

Hans W

Found a cool link- how to build a $20 hot air pen for soldering
surface mount!


7679854/

Here's the Rat Shack $10 desoldering pen he mentions:

5Fname=CTLG%5F005%5F006%5F003%5F000&product%5Fid=64%2D2060

I'm off to Rat Shack!

Steve Greenfield

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the Homebrew_PCBs
group.

File : /How_to_solder_1.pdf
Uploaded by : alienrelics <alienrelics@...>
Description : How To Solder- one page PDF file

You can access this file at the URL



To learn more about file sharing for your group, please visit



Regards,

alienrelics <alienrelics@...>

Em branco
I forgot this dll , win95io.dll to run printer port , only 1kb.

This from Yahoo:

Dear Yahoo! Groups Members,

The Yahoo! Groups service will be down Friday March 15 9:00 PM PST
(GMT-8) as we move our servers to a new facility. We expect the
service to be back up the morning of Sunday March 17.

During this time the web site will be unavailable and email will
not be delivered. (Some users may experience email non-delivery
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It means just what it says, so please be advised!

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Em branco
Quem quiser o programa para controle da Plotter pode baixar em :

Home Build Plotter Driver Download :

Hi , i am Eduardo , and i make a pcb plotter , see it at :

Yep, already had those in the Bookmarks section. I might have
gotten them from Adam originally.

Steve Greenfield

--- Adam Seychell <adam_seychell@...> wrote:

Here is a good link describing the steps on manufacturing a
multilayer
board (pattern plating).



some more PCB info can be had at;

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