Mail Archives: geda-user/2014/04/02/08:20:19
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| Wed, 02 Apr 2014 05:19:03 -0700 (PDT)
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| <CAOFvGD4j15k5ytLYB-sbzcUtLugqp5HrVj+gwKOEWdxTWhJBpQ AT mail DOT gmail DOT com>
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| Date: | Wed, 2 Apr 2014 14:19:03 +0200
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| Message-ID: | <CACwWb3AhQwnnjcou2xNXN5ihN=3=y6wjjHiKrDAL8_Qy+16xVA@mail.gmail.com>
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| Subject: | Re: [geda-user] printing from PCB
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| From: | Levente <leventelist AT gmail DOT com>
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| To: | gEDA User Mailing List <geda-user AT delorie DOT com>
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--089e013d1a6054887504f60e4af2
Content-Type: text/plain; charset=ISO-8859-1
I prefer vector graphics.
On Wed, Apr 2, 2014 at 2:07 PM, Jason White <
whitewaterssoftwareinfo AT gmail DOT com> wrote:
> Building your own boards, ay?
>
> I know this isn't directly related to your question but I always exported
> a 1000 dpi monochrome PNG file for each layer and loaded it into GIMP or
> another photo manipulation program. From there I could panelize my design
> (tile it), add descriptive headers such as "THIS SIDE UP" and print it with
> a supposed .001" accuracy. At 1000dip the resolution of the image in pixels
> correlated directly to how many thousands of an inch wide it was supposed
> to be, simplifying the task of recognizing how big or small a design really
> was.
>
> One thing I found was that the large commercial printers such as the ones
> Staples or OfficMax typically have, print *far* superior masks
> (transparency slides) than anything I could achieve at home with a consumer
> laser printer. If you are doing photo-lithography (the photo transfer
> method) I would strongly recommend getting a pdf of the mask printed off by
> them for a buck or two. Typically home printed transparencies have to be
> doubled up for additional opacity, whereas theirs did not.
>
> I found this to be a real advantage because it's very difficult to align
> multiple sheets, the plastic when its printed on seems to warp a little bit
> as its heated by the printer, causing the same image printed twice even on
> the same sheet not to be exactly the same dimensions. Also I typically
> under-exposed my boards in fear of small (8-10mil) traces would get washed
> out. The amount of time in the developer goes down significantly if the
> board is exposed a bit longer than the absolute minimum needed to get the
> pattern in the photo resist.
>
> Just my 2 cents.
>
> Jason White.
>
>
> On Wed, Apr 2, 2014 at 6:21 AM, Richard Bown <richard AT g8jvm DOT com> wrote:
>
>> Hi,
>> On the 8th attempt I now have a board ready to print on to a
>> transparency.
>>
>> When printing is there any way of NOT printing the header sheet with
>> the list of whats there ?
>> I found I can deselect the top of the board OK, just want to print the
>> bottom only.
>>
>> It would be nice if some how I could add to the printing menu the size
>> 6X4", or a wee bit bigger, as I'm using a printer with a tray for photo
>> paper as well.
>> So I could pre-cut the film to 6x4" and load it from the top tray ,
>>
>> I see A, B, C & D sizes but not sure what they are, and I'm not sure on
>> US paper sizes, sri.
>> The paper guide on the printer tray will open out to 4.5" , so a little
>> tolerance of size.
>>
>> many thanks
>>
>> --
>> --
>> Best wishes /73
>> Richard Bown
>> Email : richard AT g8jvm DOT com
>> HTTP : http://www.g8jvm.com
>> nil carborundum a illegitemis
>>
>> ##################################################################################
>> Ham Call G8JVM . OS Linux Mint 16 x86_64 on a Dell Inspiron N5030 laptop
>> Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
>> QRV VHF 6mtrs 200W, 4 mtrs 150W, 2mtrs 400W, 70cms 200W
>> Microwave 23 cms 140W, 13 cms 100W, 6 cms 0W & 3cms 5W
>>
>> ##################################################################################
>>
>>
>
>
> --
> Jason White
>
--089e013d1a6054887504f60e4af2
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">I prefer vector graphics.<br></div><div class=3D"gmail_ext=
ra"><br><br><div class=3D"gmail_quote">On Wed, Apr 2, 2014 at 2:07 PM, Jaso=
n White <span dir=3D"ltr"><<a href=3D"mailto:whitewaterssoftwareinfo AT gma=
il.com" target=3D"_blank">whitewaterssoftwareinfo AT gmail DOT com</a>></span> =
wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div><div><div><div>Buildin=
g your own boards, ay?<br></div><div><br>I know this isn't directly rel=
ated to your question but I always exported a 1000 dpi monochrome PNG file =
for each layer and loaded it into GIMP or another photo manipulation progra=
m. From there I could panelize my design (tile it), add descriptive headers=
such as "THIS SIDE UP" and print it with a supposed .001" a=
ccuracy. At 1000dip the resolution of the image in pixels correlated direct=
ly to how many thousands of an inch wide it was supposed to be, simplifying=
the task of recognizing how big or small a design really was.<br>
<br></div>One thing I found was that the large commercial printers such as =
the ones Staples or OfficMax typically have, print *far* superior masks (tr=
ansparency slides) than anything I could achieve at home with a consumer la=
ser printer. If you are doing photo-lithography (the photo transfer method)=
I would strongly recommend getting a pdf of the mask printed off by them f=
or a buck or two. Typically home printed transparencies have to be doubled =
up for additional opacity, whereas theirs did not.<br>
<br></div>I found this to be a real advantage because it's very difficu=
lt to align multiple sheets, the plastic when its printed on seems to warp =
a little bit as its heated by the printer, causing the same image printed t=
wice even on the same sheet not to be exactly the same dimensions. Also I t=
ypically under-exposed my boards in fear of small (8-10mil) traces would ge=
t washed out. The amount of time in the developer goes down significantly i=
f the board is exposed a bit longer than the absolute minimum needed to get=
the pattern in the photo resist.<br>
<br></div>Just my 2 cents.<br><br></div>Jason White.<br></div><div class=3D=
"gmail_extra"><div><div class=3D"h5"><br><br><div class=3D"gmail_quote">On =
Wed, Apr 2, 2014 at 6:21 AM, Richard Bown <span dir=3D"ltr"><<a href=3D"=
mailto:richard AT g8jvm DOT com" target=3D"_blank">richard AT g8jvm DOT com</a>></span=
> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Hi,<br>
On the 8th attempt I now have a board ready to print on to a<br>
transparency.<br>
<br>
When printing is there any way of NOT printing the header sheet with<br>
the list of whats there ?<br>
I found I can deselect the top of the board OK, just want to print the<br>
bottom only.<br>
<br>
It would be nice if some how I could add to the printing menu the size<br>
6X4", or a wee bit bigger, as I'm using a printer with a tray for =
photo<br>
paper as well.<br>
So I could pre-cut the film to 6x4" and load it from the top tray ,<br=
>
<br>
I see A, B, C & D sizes but not sure what they are, and I'm not sur=
e on<br>
US paper sizes, sri.<br>
The paper guide on the printer tray will open out to 4.5" , so a littl=
e<br>
tolerance of size.<br>
<br>
many thanks<br>
<span><font color=3D"#888888"><br>
--<br>
--<br>
Best wishes /73<br>
Richard Bown<br>
Email : <a href=3D"mailto:richard AT g8jvm DOT com" target=3D"_blank">richard AT g8jv=
m.com</a><br>
HTTP =A0: =A0<a href=3D"http://www.g8jvm.com" target=3D"_blank">http://www.=
g8jvm.com</a><br>
nil carborundum a illegitemis<br>
###########################################################################=
#######<br>
Ham Call G8JVM . OS Linux Mint 16 x86_64 on a Dell Inspiron N5030 laptop<br=
>
Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W<br>
QRV VHF 6mtrs 200W, 4 mtrs 150W, 2mtrs 400W, 70cms 200W<br>
Microwave 23 cms 140W, 13 cms 100W, 6 cms 0W & 3cms 5W<br>
###########################################################################=
#######<br>
<br>
</font></span></blockquote></div><br><br clear=3D"all"><br></div></div><spa=
n class=3D"HOEnZb"><font color=3D"#888888">-- <br>Jason White
</font></span></div>
</blockquote></div><br></div>
--089e013d1a6054887504f60e4af2--
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