开云体育

Hello Russell,

Wednesday, January 30, 2002, 01:14:08, you wrote:



RS> JanRwl@... wrote:

In a message dated 29-Jan-02 03:00:04 Central Standard Time,
rjshaw@... writes:

What methods do back-yarders use to get the sharpest
PCB tracks? Photographic? Milling?

When I need best I can do without having a pro-shop do etching, I use
contact-printing of negatives with Kepro stuff.??? But I haven't done a
home-brew "photographic" in so long I don't even know what the various
solutions were called!

I have done nothing more complex than a 6-IC little lashup in years, and I
get by with Radio Shack and whoevermailorderitwas "pressure sensitive"
"rub-on" stuff.??? That works really fine, if done right, actually!

RS> I was wondering how much resolution the various
RS> methods get. I've found the best printers are
RS> epson stylus colour inkjets (400 and higher),
RS> used with epson transparencies (its coated
RS> with an absorbing layer instead of 'sandpaper').
RS> Using a lightbox etc, i can get 6-8mil tracks
RS> and spacing. Works with precoated negative
RS> boards, and spray-on positive resist (PRP).

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And I replied:

Photographic method preferred. I use positive precoated boards and
have a frend with typesetter who is producing the positive artwork for
my boards. It is the cheapest method. The 3 sqft of artwork costs
approx $4, and those 3 sqft ia a lot of boards!

So compared with the price of Epson transpaerncies+ink cartridges (the
most expensive part - printers are el cheapo, consumables are the
company lives on), Someone's typesetter is the best choice.

--
Best Regards,
Zoran, Belgrade, YU
mailto:zasto@...

Sharpest tracks for me were with lith film (Ilford)-- I use this for
unsharp masks for BW negatives so I always have some on hand. I do
almost all my stuff now using Avery Clear Full Sheet Labels (when I
am in a hurry) or Xerox mylar film. With the avery labels I usually
use 20 mils as the smallest trace width -- going to 10 mils I find is
chancy.

I find the main reason for the sharpest
tracks is to run traces between pins.
All other traces should be made as
wide as possible to minimize the
possible problems is gaps or
smearing of traces.

To go between pins you usually need 10 or 12 mil
traces. I have no problem doing them
by laser printing or copying pcb images onto
plain paper, ironing onto standard copper
clad boards, soaking the paper off, and then
etching in a warm bath.
Here is how I do it.

Note that it is extremely important to coat the
boards after etching with something (floor wax!)
that keeps them from oxidizing and allows good
solder flow.

Ciao,

Dave
The Inexpesive Seismometer Project

Note that it is extremely important to coat the
boards after etching with something (floor wax!)
that keeps them from oxidizing and allows good
solder flow.

I've been using Mar-Hyde clear lacquer (spray can) for this purpose. It
leaves extremely thin coating which doesn't make any problems for soldering
while completely eliminates corrosion. Works great for many years.


KPL

At Bullock Design Center, we specialize in turning your ideas into
products. Using state of the art software and years of engineering
expertise, we can design any hardware you can imagine. From DC power
supplies to wireless communication systems and from battery holders
to complex housing we can do it all.

PCB design, schematic capture, sheet metal, plastic, component
sourcing, prototyping and working with other manufacturers are some
of the services that we offer.

Please visit us at

www.bullock-designs.com

Thank you,
Ryan Bullock

I know it is too complex to have a price sheet, but how about a rough
estimate for some example designs?

Steve
moderator

--- In Homebrew_PCBs@y..., "scuba6us" <scuba6us@y...> wrote:

At Bullock Design Center, we specialize in turning your ideas into
products. Using state of the art software and years of engineering
expertise, we can design any hardware you can imagine. From DC

power

supplies to wireless communication systems and from battery holders
to complex housing we can do it all.

PCB design, schematic capture, sheet metal, plastic, component
sourcing, prototyping and working with other manufacturers are some
of the services that we offer.

Please visit us at

www.bullock-designs.com

Thank you,
Ryan Bullock

Test 1 2 3

I have EasyPc V5.0 - works well for me...had Quick Route 4.0 before that (actually - I still have it - any offers?), and didn't get along with it at all. Easy PC was a vast improvement!

Regards,
Tony

4 5 6

Although it is nice to get an honest opinion of
EasyPC, I don't want this to turn into a group for
ads.

What does everyone think? Ban ads? Ads allowed only on
one day a month, like some other lists? Free-for-all?

A quote from the auction: "I'm hoping I'm not the only
idiot in the world for buying this trash! I don't
know, may be you think Easy-PC is the best thing since
sliced bread, in which case you now have the
opportunity to waste your money and help me recover
some of my loss. The Easy-PC program sucks. ! I want
rid of it."

Steve

--- electronic_workshop <hans@...>
wrote:

=====
Steve Greenfield // Digital photo scanning, retouching,
Polymorph Digital Photography // and photomorphing to your specs.
253/318-2473 voice // We use the best little computer in
polymorph@... // the world, the Amiga!
// Based in Tacoma, WA, USA

__________________________________________________
Do You Yahoo!?
Send FREE Valentine eCards with Yahoo! Greetings!

I have EasyPc V5.0 - works well for me...had Quick Route 4.0 before that
(actually - I still have it - any offers?), and didn't get along with it

How much for a kind Brazilian looking for a nice proggie? :o)


---8<---Corte aqui---8<----

Alexandre Souza
taito@...


---8<---Corte aqui---8<----

I didn't take that message as an ad but as a warning. Someone seriously trying to sell something usually doesn't start out with calling the product "trash".

CAD programs are expensive in both money and in time to learn and really evaluate them. An early heads up can save a lot of both.

Commercials of the type "My product is wonderful - buy it from me now" probably should be banned. As I said earlier, I didn't take that particular email as a commercial.

Harry


----Original Message Follows----
From: Steve Greenfield <alienrelics@...>
Reply-To: Homebrew_PCBs@...
To: Homebrew_PCBs@...
Subject: [Homebrew_PCBs] Ads banned or allowed?
Date: Thu, 7 Feb 2002 08:10:08 -0800 (PST)

Although it is nice to get an honest opinion of
EasyPC, I don't want this to turn into a group for
ads.

What does everyone think? Ban ads? Ads allowed only on
one day a month, like some other lists? Free-for-all?

A quote from the auction: "I'm hoping I'm not the only
idiot in the world for buying this trash! I don't
know, may be you think Easy-PC is the best thing since
sliced bread, in which case you now have the
opportunity to waste your money and help me recover
some of my loss. The Easy-PC program sucks. ! I want
rid of it."

Steve

--- electronic_workshop <hans@...>
wrote:

=====
Steve Greenfield // Digital photo scanning, retouching,
Polymorph Digital Photography // and photomorphing to your specs.
253/318-2473 voice // We use the best little computer in
polymorph@... // the world, the Amiga!
// Based in Tacoma, WA, USA

__________________________________________________
Do You Yahoo!?
Send FREE Valentine eCards with Yahoo! Greetings!



To unsubscribe from this group, send an email to:
Homebrew_PCBs-unsubscribe@...



Your use of Yahoo! Groups is subject to



_________________________________________________________________
Send and receive Hotmail on your mobile device:

Thank goodness someone figured out what I really intended... yes it is a
warning. I am not the only person that feels like this about Easy-PC. I
really don't care if I sell it or not !
I truly tried giving these people every opportunity to fix the well
documented bugs and even spent another $75 on the Version 5 upgrade,
only to find to a large extend the bugs are still there.

According to another eGroup a Company called West Dev purchased
NumberOne (Easy-PC) and are now selling a different program, it is
called Pulsonix...... the Schematic drawing portion of the program is
free, but the PCB layout portion costs several 1000 dollars... !
If you know Easy-PC and download the Pulsonix you will notice they are
very similar.

The point I'm trying to make is exactly as Harry saw it... its a
warning.

OK, I know I should not have purchased it. But 20/20 hind sight works
well for most people.

I gave them 15 months to fix the problems and have documented each and
every email, and phone call to these people, they simply do not make the
effort to fix bugs. They chose not to do so, and that's why they
ended up on my other web site

COS (Change Of Subject)
As it happens this crusade of mine has a positive side, I found
HomeBrew_PCB ....
I have been making my own PCB's for the last 35 years, from the early
days of painting copper clad boards by hand, to today when I make 8 mil
traces as an everyday affair. Examples of my home made PCB's are
scattered all over my web site. I silver plate my
boards, I expect you all know how to do that.

So I look forward to asking a few questions, mostly about how to do
through hole plating at home, other than conductive ink and electro
copper plating in sulfuric acid baths, does anyone have a good simpler
solution..

If I offended anyone, I'm sorry, and I apologize.

Best Regards
Hans W




"Harry W. Lewis" wrote:

I didn't take that message as an ad but as a warning. Someone
seriously
trying to sell something usually doesn't start out with calling the
product
"trash".

CAD programs are expensive in both money and in time to learn and
really
evaluate them. An early heads up can save a lot of both.

Commercials of the type "My product is wonderful - buy it from me now"

probably should be banned. As I said earlier, I didn't take that
particular
email as a commercial.

Harry


----Original Message Follows----
From: Steve Greenfield <alienrelics@...>
Reply-To: Homebrew_PCBs@...
To: Homebrew_PCBs@...
Subject: [Homebrew_PCBs] Ads banned or allowed?
Date: Thu, 7 Feb 2002 08:10:08 -0800 (PST)

Although it is nice to get an honest opinion of
EasyPC, I don't want this to turn into a group for
ads.

What does everyone think? Ban ads? Ads allowed only on
one day a month, like some other lists? Free-for-all?

A quote from the auction: "I'm hoping I'm not the only
idiot in the world for buying this trash! I don't
know, may be you think Easy-PC is the best thing since
sliced bread, in which case you now have the
opportunity to waste your money and help me recover
some of my loss. The Easy-PC program sucks. ! I want
rid of it."

Steve

--- electronic_workshop <hans@...>
wrote:

=====
Steve Greenfield // Digital photo scanning, retouching,
Polymorph Digital Photography // and photomorphing to your specs.
253/318-2473 voice // We use the best little computer in
polymorph@... // the world, the Amiga!
// Based in Tacoma, WA, USA

__________________________________________________
Do You Yahoo!?
Send FREE Valentine eCards with Yahoo! Greetings!



To unsubscribe from this group, send an email to:
Homebrew_PCBs-unsubscribe@...



Your use of Yahoo! Groups is subject to




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ADVERTISEMENT

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--- In Homebrew_PCBs@y..., "marble_h" <marble_h@y...> wrote:

I want to get a plotter what would be the right one I now have a
calcomp 1034 and it can not be used for this type of work . What
would be the best one to get.Thank you group I have seen a lot up

for

bid on E-bay

Take a look this link

maybe can help you to get the right one.

And that link is in fact already on the links pages.

Please check out the Bookmarks pages on the group
page. I went to some trouble to set it up so all can
use it.

And guess what I found in my misc. pen drawer? A
Steadler 313!

Steve

--- ychan_my <ychan_my@...> wrote:

--- In Homebrew_PCBs@y..., "marble_h"
<marble_h@y...> wrote:

I want to get a plotter what would be the right

one I now have a

calcomp 1034 and it can not be used for this type

of work . What

would be the best one to get.Thank you group I

have seen a lot up
for

bid on E-bay

Take a look this link

maybe can help you to get the right one.

__________________________________________________
Do You Yahoo!?
Send FREE Valentine eCards with Yahoo! Greetings!

seems to be a broken or non-existent link.

Hello,

Has anyone come across drivers to print form EasyTrax? Or is there a way to get the file into Windows to print it?

Thanks,
Brian Gracia

Hi,

Just found some pcb cad that works in linux:

As far as I can recall, EasyTrax came with DOS drivers for a HP Laserjet Printer, Epson compatible Printers, and several pen plotters. I'm pretty certain I still have my disks, so if you get stuck, I can probably get you a copy of the drivers.

As the original driver was for a Laserjet 1, I think this should still be suitable as new Laserjets just use a superset of the original PCL driver language.

Regards,

Wolf Maier