Homebrew PCBs

Hi, I am a newbie, and this is first post.  Have enjoyed reading all
the ideas, and when I came to the one on Reynolds Parchment paper, I
thought it would be worth trying.  However, the local supermarket did
not stock the Reynolds Parchment paper, but did have one of it's own
store brand.  I thought I would try it, even though it was not labeled
"silicone".  I also found a new Reynolds Aluminum Foil, labeled
"Non-Stick" that did have a silicone coating, so bought a roll of it.

First tests indicate that both work very well, but the aluminum foil
was especially interesting, since it transferred more quickly and more
completely than the parchment paper, perhaps due to the better heat
conduction of the aluminum.  To run the foil through the laser printer
[HP LaserJet 5L] I taped it to another piece of paper.  Some care is
required to keep the foil from wrinkling, of course.

Since the aluminum is not transparent, it may be hard to get proper
alignment, but it seems to me that this could be done with a few
alignment holes punched in the aluminum to match marks on the pcb.

I wonder if this could also be used to transfer markings to the
painted front panel of a project?  "Further experimentation is
required."

Regards, Curt W4QBU

Hi,

just wondering, has anyone noticed trouble buying CuCl chemicals?

I mean after the London bombs i would be slightly apprehensive buying HCl,  
H2O2, and acetone for cleaning boards together.

I wonder if they will make it harder to buy this stuff.

ST

I bought acetone just yesterday, but then again I live in a rural area
(potatoe field next door, had a pig farm a mile away, dairy farm on the way
to Montreal).  On the other hand, it's only a 20 minute drive to downtown
Montreal and the subway system.

If you control one substance, the bomb-makers will just substitute it for
the next best thing.  If you look at the chemicals in your laundry room,
you've got all it takes right there.  They can't control all chemical bombs,
just not possible.

Since I'm not a bomb-maker, I have no problem showing identification when I
buy this stuff.  We already have laws on some pesticides and herbicides.
They have to be kept under lock and key at the store; forcing you to ask the
salesperson.

There have been cases where STUPID people put stuff akin to agent orange
where children play.  If it means saving the lives of a kid from a STUPID
person, I have no problem with these laws.  Too bad we don't have a law
against STUPID people though...

Robert
:)



-----Message d'origine-----
De : Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] De
la part de Stefan Trethan
Envoyé : juillet 22 2005 16:25
À : Homebrew_PCBs@yahoogroups.com
Objet : [Homebrew_PCBs] CuCl


Hi,

just wondering, has anyone noticed trouble buying CuCl chemicals?

I mean after the London bombs i would be slightly apprehensive buying HCl,  
H2O2, and acetone for cleaning boards together.

I wonder if they will make it harder to buy this stuff.

ST


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Oh i don't mind it either to show an ID when buying such chemicals,
but what i fear is that it will be less available in general if it is a  
hassle to sell.

I wouldn't think twice to buy any one of the chemicals alone, but buying  
all you need for a popular type of explosive at once must look damn  
suspicious, and can easily happen wih cupric chloride or cupric sulphate  
etchants.
I don't think a terrorist will be so stupid to buy them all at once, but  
those shop assistants here are required by law to do something (i don't  
remember what exactly) when they identify a dangerous combination of  
substances.
maybe it isn't an issue with relatively low quantity, i dunno.

I don't think these laws make it harder for the stupid people, remember  
the story where they fed a small child 30% H2O2? Stupid people are just  
that, they don't get any cleverer by laws.

ST


On Sat, 23 Jul 2005 05:46:04 +0200, Robert Hedan  
<robert.hedan@...> wrote:

> I bought acetone just yesterday, but then again I live in a rural area
> (potatoe field next door, had a pig farm a mile away, dairy farm on the  
> way
> to Montreal).  On the other hand, it's only a 20 minute drive to downtown
> Montreal and the subway system.
> If you control one substance, the bomb-makers will just substitute it for
> the next best thing.  If you look at the chemicals in your laundry room,
> you've got all it takes right there.  They can't control all chemical  
> bombs,
> just not possible.
> Since I'm not a bomb-maker, I have no problem showing identification  
> when I
> buy this stuff.  We already have laws on some pesticides and herbicides.
> They have to be kept under lock and key at the store; forcing you to ask  
> the
> salesperson.
> There have been cases where STUPID people put stuff akin to agent orange
> where children play.  If it means saving the lives of a kid from a STUPID
> person, I have no problem with these laws.  Too bad we don't have a law
> against STUPID people though...
> Robert
>