Homebrew_PCBs

Hi Group,
Remember the Mylar printers that would do letter quality
printing. They had ribbons that could only be used once. If you took
the ribbon apart you could see everything that was printed by the
printer. I was wondering if the Mylar print would hold up to the acid.

Crankster

I have a feeling those were wax. Mylar is what the ribbon backing
is made of. So really the Alps and Fargo wax thermal are just newer
versions of that.

Steve

--- crankorgan <john@...> wrote:

> Hi Group,
> Remember the Mylar printers that would do letter quality
> printing. They had ribbons that could only be used once. If you
> took
> the ribbon apart you could see everything that was printed by the
> printer. I was wondering if the Mylar print would hold up to the
> acid.
>
> Crankster

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--- In Homebrew_PCBs@y..., Steve Greenfield <alienrelics@y...> wrote:

> I have a feeling those were wax. Mylar is what the ribbon backing
> is made of. So really the Alps and Fargo wax thermal are just newer
> versions of that.

Steve,
So the print that came off the mylar was colored wax. So
I take it wax will repel acid if it will stay stuck to the
copper.

John

>
> Steve
>
> --- crankorgan <john@k...> wrote:
> > Hi Group,
> > Remember the Mylar printers that would do letter quality
> > printing. They had ribbons that could only be used once. If you
> > took
> > the ribbon apart you could see everything that was printed by the
> > printer. I was wondering if the Mylar print would hold up to the
> > acid.
> >
> > Crankster
>
>
>
> __________________________________________________
> Do you Yahoo!?
> Yahoo! News - Today's headlines
> http://news.yahoo.com

--- crankorgan <john@...> wrote:

> --- In Homebrew_PCBs@y..., Steve Greenfield <alienrelics@y...>
> wrote:
> > I have a feeling those were wax. Mylar is what the ribbon
> backing
> > is made of. So really the Alps and Fargo wax thermal are just
> newer
> > versions of that.
> Steve,
> So the print that came off the mylar was colored wax. So
> I take it wax will repel acid if it will stay stuck to the
> copper.

It is waterproof, so it should hold up under acid. The old ribbon
typewriters may not have used wax, might have been some kind of
plastic, but in any case it did seem to be waterproof. The Alps and
Fargo wax is waterproof. Haven't seen a wax yet that isn't
waterproof.

And it should be easy to clean off after etching. Lighter fluid
dissolves wax quickly and easily, or for fewer fumes Goo Gone or
other cleaners are available from the hardware store to clean wax
or crayon off.


=====
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!
http://www.polyphoto.com/ // Based in Tacoma, WA, USA

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--- crankorgan <john@...> wrote:

> --- In Homebrew_PCBs@y..., Steve Greenfield <alienrelics@y...>
> wrote:
> > I have a feeling those were wax. Mylar is what the ribbon
> backing
> > is made of. So really the Alps and Fargo wax thermal are just
> newer
> > versions of that.
> Steve,
> So the print that came off the mylar was colored wax. So
> I take it wax will repel acid if it will stay stuck to the
> copper.

It is waterproof, so it should hold up under acid. The old ribbon
typewriters may not have used wax, might have been some kind of
plastic, but in any case it did seem to be waterproof. The Alps and
Fargo wax is waterproof. Haven't seen a wax yet that isn't
waterproof.

And it should be easy to clean off after etching. Lighter fluid
dissolves wax quickly and easily, or for fewer fumes Goo Gone or
other cleaners are available from the hardware store to clean wax
or crayon off.


=====
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!
http://www.polyphoto.com/ // Based in Tacoma, WA, USA

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Do you Yahoo!?
Yahoo! News - Today's headlines
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Steve,
So I see it as trace and etch. A sheet of something is placed
over a board. A plotter with a heated or vibrating pin traces on the
sheet sending the pads and traces onto the copper. Hmmmm

John

--- In Homebrew_PCBs@y..., Steve Greenfield <alienrelics@y...> wrote:
> --- crankorgan <john@k...> wrote:
> > --- In Homebrew_PCBs@y..., Steve Greenfield <alienrelics@y...>
> > wrote:
> > > I have a feeling those were wax. Mylar is what the ribbon
> > backing
> > > is made of. So really the Alps and Fargo wax thermal are just
> > newer
> > > versions of that.
> > Steve,
> > So the print that came off the mylar was colored wax. So
> > I take it wax will repel acid if it will stay stuck to the
> > copper.
>
> It is waterproof, so it should hold up under acid. The old ribbon
> typewriters may not have used wax, might have been some kind of
> plastic, but in any case it did seem to be waterproof. The Alps and
> Fargo wax is waterproof. Haven't seen a wax yet that isn't
> waterproof.
>
> And it should be easy to clean off after etching. Lighter fluid
> dissolves wax quickly and easily, or for fewer fumes Goo Gone or
> other cleaners are available from the hardware store to clean wax
> or crayon off.
>
>
> =====
> 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@p... // the world, the Amiga!
> http://www.polyphoto.com/ // Based in Tacoma, WA, USA
>
> __________________________________________________
> Do you Yahoo!?
> Yahoo! News - Today's headlines
> http://news.yahoo.com