Homebrew PCBs

Hi

I use Tina for all my simulations and work. It also allows me to create my
PCB's

Being small time I would use toner transfer method for my work..
 This is where my confusion starts.

To better explain my problem I have uploaded two files at the location
http://tech.groups.yahoo.com/group/Homebrew_PCBs/files/First_PCB/

The first file is InvAmp.Gif, this is the image of the PCB I see when it is
auto generated.

The next file is InvAmp.pdf which is the print I will get and is a mirror
image.

I think I am not suppose to use the mirror image for the work when I am
using toner transfer or am I thinking wrong ??

This may be very silly but I am just not sure.

My actual circut is quite different but I just used this simple inverting
amp of an opamp to demonstrate my query.

Thanks
Regards
-- 
Gaurav Verma
Email - Gaurav.Verma.MCA@...
Phone - 9910732960



-- 
Gaurav Verma
Email - Gaurav.Verma.MCA@...
Phone - 9910732960


[Non-text portions of this message have been removed]

On Tue, 15 Sep 2009 09:43:38 +0530, you wrote:

> Hi
>
>I use Tina for all my simulations and work. It also allows me to create my
>PCB's
>
>Being small time I would use toner transfer method for my work..
> This is where my confusion starts.
>
>To better explain my problem I have uploaded two files at the location
>http://tech.groups.yahoo.com/group/Homebrew_PCBs/files/First_PCB/
>
>The first file is InvAmp.Gif, this is the image of the PCB I see when it is
>auto generated.
>
>The next file is InvAmp.pdf which is the print I will get and is a mirror
>image.
>
The reversed image will transfer correctly to a board.  All toner
transfer layers when printed must be mirror images.  You should not be
able to read the print directly.

Look at the diagram through the paper when held up to light.  The
toner side should be facing the light.  That toner will be transferred
to the board as you see it through the paper.  At this point, you
should be able to read the letters.



>I think I am not suppose to use the mirror image for the work when I am
>using toner transfer or am I thinking wrong ??

You do use the mirror image.  Try the experiment with a piece of
paper.  Try to transfer the image from the paper (cheap paper, scrap
of board) to the board.  You should see the image properly.

In some programs, you may or may not automatically print the bottom
layer reversed, you do, this is good.  It saves a step.

Harvey

>
>This may be very silly but I am just not sure.
>
>My actual circut is quite different but I just used this simple inverting
>amp of an opamp to demonstrate my query.
>
>Thanks
>Regards
>-- 
>Gaurav Verma
>Email - Gaurav.Verma.MCA@...
>Phone - 9910732960

Hi
Thanks a ton....
Regards
Gaurav

On Tue, Sep 15, 2009 at 11:04 AM, Harvey White <madyn@...> wrote:

>
>
> On Tue, 15 Sep 2009 09:43:38 +0530, you wrote:
>
> > Hi
> >
> >I use Tina for all my simulations and work. It also allows me to create my
> >PCB's
> >
> >Being small time I would use toner transfer method for my work..
> > This is where my confusion starts.
> >
> >To better explain my problem I have uploaded two files at the location
> >http://tech.groups.yahoo.com/group/Homebrew_PCBs/files/First_PCB/
> >
> >The first file is InvAmp.Gif, this is the image of the PCB I see when it
> is
> >auto generated.
> >
> >The next file is InvAmp.pdf which is the print I will get and is a mirror
> >image.
> >
> The reversed image will transfer correctly to a board. All toner
> transfer layers when printed must be mirror images. You should not be
> able to read the print directly.
>
> Look at the diagram through the paper when held up to light. The
> toner side should be facing the light. That toner will be transferred
> to the board as you see it through the paper. At this point, you
> should be able to read the letters.
>
> >I think I am not suppose to use the mirror image for the work when I am
> >using toner transfer or am I thinking wrong ??
>
> You do use the mirror image. Try the experiment with a piece of
> paper. Try to transfer the image from the paper (cheap paper, scrap
> of board) to the board. You should see the image properly.
>
> In some programs, you may or may not automatically print the bottom
> layer reversed, you do, this is good. It saves a step.
>
> Harvey
>
> >
> >This may be very silly but I am just not sure.
> >
> >My actual circut is quite different but I just used this simple inverting
> >amp of an opamp to demonstrate my query.
> >
> >Thanks
> >Regards
> >--
> >Gaurav Verma
> >Email - Gaurav.Verma.MCA@... <Gaurav.Verma.MCA%40gmail.com>
> >Phone - 9910732960
>
> 
>



-- 
Gaurav Verma
Email - Gaurav.Verma.MCA@...
Phone - 9910732960


[Non-text portions of this message have been removed]

I usually print mirror image for the "top", and normal for the bottom  
- which already has text and stuff backwards.

But I've almost always done 1-layer top-only boards, so I can only be  
trusted for the "top"

Obviously the TT process inherently mirrors when you iron on. If you  
print it, turn the printed side away from you and look through the  
paper with a bright light behind it, and what you see looks wrong,  
then don't transfer it and you've only wased a sheet of paper.

PG

On 15/09/2009, at 3:34 PM, Harvey White wrote:

> On Tue, 15 Sep 2009 09:43:38 +0530, you wrote:
>
> > Hi
> >
> >I use Tina for all my simulations and work. It also allows me to  
> create my
> >PCB's
> >
> >Being small time I would use toner transfer method for my work..
> > This is where my confusion starts.
> >
> >To better explain my problem I have uploaded two files at the  
> location
> >http://tech.groups.yahoo.com/group/Homebrew_PCBs/files/First_PCB/
> >
> >The first file is InvAmp.Gif, this is the image of the PCB I see  
> when it is
> >auto generated.
> >
> >The next file is InvAmp.pdf which is the print I will get and is a  
> mirror
> >image.
> >
> The reversed image will transfer correctly to a board. All toner
> transfer layers when printed must be mirror images. You should not be
> able to read the print directly.
>
> Look at the diagram through the paper when held up to light. The
> toner side should be facing the light. That toner will be transferred
> to the board as you see it through the paper. At this point, you
> should be able to read the letters.
>
> >I think I am not suppose to use the mirror image for the work when  
> I am
> >using toner transfer or am I thinking wrong ??
>
> You do use the mirror image. Try the experiment with a piece of
> paper. Try to transfer the image from the paper (cheap paper, scrap
> of board) to the board. You should see the image properly.
>
> In some programs, you may or may not automatically print the bottom
> layer reversed, you do, this is good. It saves a step.
>
> Harvey
>
> >
> >This may be very silly but I am just not sure.
> >
> >My actual circut is quite different but I just used this simple  
> inverting
> >amp of an opamp to demonstrate my query.
> >
> >Thanks
> >Regards
> >--
> >Gaurav Verma
> >Email - Gaurav.Verma.MCA@...
> >Phone - 9910732960
>