Homebrew_PCBs

I saw a site a while back where a guy was using a PCB sensitizing
spray in a can. It was from Europe...I can't remember what it was
called...GPC or something. You just sprayed it onto a board,
exposed, developed and etched. I looked and looked and even emailed
a bunch of companies to find it, but never did. I am told it is
fairly hard to use, as it is said to be tricky to get the right
uniform thickness of the stuff on boards.
I'd still like to try it though. Does anyone know what some of
these products are called and/or where to find them in the US?

-Josh

Josh,

Try the product made by Electrolube. http://www.electrolube.co.uk/index.shtml

This product has been use in this part of the woods with reasonable success.

I believe it can be obtained in the US from

ECHELON Industries in California.

We buy ours from RS components rswww.com Part # is 198-9657

Do a web search on these company names and you will manage to find the product.

David

At 02:27 PM 19/03/2004, you wrote:

> I saw a site a while back where a guy was using a PCB sensitizing
>spray in a can. It was from Europe...I can't remember what it was
>called...GPC or something. You just sprayed it onto a board,
>exposed, developed and etched. I looked and looked and even emailed
>a bunch of companies to find it, but never did. I am told it is
>fairly hard to use, as it is said to be tricky to get the right
>uniform thickness of the stuff on boards.
> I'd still like to try it though. Does anyone know what some of
>these products are called and/or where to find them in the US?
>
>-Josh
>
>
>
>Be sure to visit the group home and check for new Bookmarks and files:
>http://groups.yahoo.com/group/Homebrew_PCBs
>Yahoo! Groups Links
>
>
>
>

David Hopkins (VK4ZF)
Queensland
AUSTRALIA
davhop@...
S 27, 22.294 E153, 11.008



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

YYEEAAAHHH...that was the stuff: Electrolube PRP200. Thanks. It
seems like it would be an easy solution for the quick production of
accurate boards. If it is cheap enough, it might be a justifiable
method.

-Josh

--- In Homebrew_PCBs@yahoogroups.com, David Hopkins <davhop@b...>
wrote:

> Josh,
>
> Try the product made by Electrolube.

http://www.electrolube.co.uk/index.shtml

>
> This product has been use in this part of the woods with

reasonable success.

>
> I believe it can be obtained in the US from
>
> ECHELON Industries in California.
>
> We buy ours from RS components rswww.com Part # is 198-9657
>
> Do a web search on these company names and you will manage to find

the product.

>
> David
>
> At 02:27 PM 19/03/2004, you wrote:
> > I saw a site a while back where a guy was using a PCB

sensitizing

> >spray in a can. It was from Europe...I can't remember what it was
> >called...GPC or something. You just sprayed it onto a board,
> >exposed, developed and etched. I looked and looked and even

emailed

> >a bunch of companies to find it, but never did. I am told it is
> >fairly hard to use, as it is said to be tricky to get the right
> >uniform thickness of the stuff on boards.
> > I'd still like to try it though. Does anyone know what some of
> >these products are called and/or where to find them in the US?
> >
> >-Josh
> >
> >
> >
> >Be sure to visit the group home and check for new Bookmarks and

files:

> >http://groups.yahoo.com/group/Homebrew_PCBs
> >Yahoo! Groups Links
> >
> >
> >
> >
>
> David Hopkins (VK4ZF)
> Queensland
> AUSTRALIA
> davhop@b...
> S 27, 22.294 E153, 11.008
>
>
>
> [Non-text portions of this message have been removed]

joshdewinter wrote:

> YYEEAAAHHH...that was the stuff: Electrolube PRP200. Thanks. It
> seems like it would be an easy solution for the quick production of
> accurate boards. If it is cheap enough, it might be a justifiable
> method.

Make sure the copper is totally free of oil or the PRP will go
to crap. Water should not bead on the surface.

Make SURE you obtain, read, and understand the Material Data Safety
Sheet (MSDS). Follow all safety precautions. I considered trying a
similar product some time back but, after looking at how incredibly
nasty the stuff was, gave it up. Haven't seen the Electrolube
product though - be nice to find out that doesn't make you sterile...


--- In Homebrew_PCBs@yahoogroups.com, "joshdewinter"
<joshdewinter@y...> wrote:

> YYEEAAAHHH...that was the stuff: Electrolube PRP200. Thanks. It
> seems like it would be an easy solution for the quick production

of

> accurate boards. If it is cheap enough, it might be a

justifiable

> method.
>
> -Josh
>

--- In Homebrew_PCBs@yahoogroups.com, "joshdewinter"
<joshdewinter@y...> wrote:

> I saw a site a while back where a guy was using a PCB

sensitizing

> spray in a can. It was from Europe...I can't remember what it was
> called...GPC or something. You just sprayed it onto a board,
> exposed, developed and etched.

G C Electronics now owned by Waldom website www.gcwaldom.com They
make a spray pos. photo resist. Believe that Kepro use to have a
neg. photo resist but they are no longer in business. Right off
hand I do not know of stocking dealers not a product that I normally
buy. Seems this topic was talked about several months ago.

Yes it is not a easy process to get it right, I tried it a long time
ago and was never pleased with the results, after I think 3 attempts
I quit, was only having maybe 2 out of 12 boards come out OK. Was
spending way too much time for what I was getting out of it.

I believe the best way is to apply resist is a dry film laminate. I
think you will find that it is easier to buy the boards already
presensitized. I buy the M.G. Chemicals pos. resist boards 600
series. They work good. Good source is Circuit Specialist
www.circuitspecialist.com or www.webtronics.com They carry in
stock most items needed to make your PCBs as well as other parts. I
buy most electronic parts from Mouser Electronics and Allied
Electronics. Mouser is starting to carry some PCB materials again
they had dropped most of it for awhile. But Circuit Specialist
currently has better pricing if you are buying 12 or more boards at
a time.


Ben

Ben