Homebrew PCBs

Has anyone here used this spray on photo resist? If so, do you like 
the product? My questions would center around whether or not it 
sprayed on evenly, and what the thickness/thinness of what is a 
proper coating?

Thanks much,

Brian Chapman
Cedar Rapids, Iowa



---

Brian,
       I used it years ago. Clean the board with a brillo pad then
rinse and blot the board with a towel.(don't touch it with your
fingers!) Do not use paper towels. Stand the board up on end in the
dark and use a red light used in developing to see. Spray the board
evenly from top to bottom. Lay the board flat then use and old hair
dryer to dry the board. (still in the dark, and then put the board in
tinfoil or a light tight box. The thing I found is you need to shake
the can before using. I also found the board needs more exposure and
developing time than the instructions. I suspect my kit was old. 

                                                 John



--- In Homebrew_PCBs@yahoogroups.com, "Brian Chapman"
<cornbeltroute@a...> wrote:

> Has anyone here used this spray on photo resist? If so, do you like 
> the product? My questions would center around whether or not it 
> sprayed on evenly, and what the thickness/thinness of what is a 
> proper coating?
> 
> Thanks much,
> 
> Brian Chapman
> Cedar Rapids, Iowa
> 
> 
> 
> ---

----- Original Message ----- 

From: "Brian Chapman" <cornbeltroute@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, June 22, 2004 3:39 PM
Subject: [Homebrew_PCBs] CG Electronics spray resist?


> Has anyone here used this spray on photo resist? If so, do you like
> the product? My questions would center around whether or not it
> sprayed on evenly, and what the thickness/thinness of what is a
> proper coating?

If it's Electrolube PRP I wouldn't bother. The original stuff was OK, but
they changed it a few years ago and I can't get the newer stuff to work.

Leon

Leon Heller wrote:
> ----- Original Message ----- 
> From: "Brian Chapman" <cornbeltroute@...>
> To: <Homebrew_PCBs@yahoogroups.com>
> Sent: Tuesday, June 22, 2004 3:39 PM
> Subject: [Homebrew_PCBs] CG Electronics spray resist?
> 
> 
>>Has anyone here used this spray on photo resist? If so, do you like
>>the product? My questions would center around whether or not it
>>sprayed on evenly, and what the thickness/thinness of what is a
>>proper coating?
> 
> 
> If it's Electrolube PRP I wouldn't bother. The original stuff was OK, but
> they changed it a few years ago and I can't get the newer stuff to work.

I use it plenty of times to make boards with 8mil tracks and spacings
without a single fault on a 10cm x 10cm board. It only doesn't work
when the technique is wrong (inadequate cleaning etc).

> If it's Electrolube PRP I wouldn't bother. The original stuff was 
OK, but they changed it a few years ago and I can't get the newer 
stuff to work. <

>> I use it plenty of times to make boards with 8mil tracks and 
spacings without a single fault on a 10cm x 10cm board. It only 
doesn't work when the technique is wrong (inadequate cleaning etc). <<

Apparently, CG Electronics is out of business. It's resist product 
was called, Etch Resist Sensitizer (part no. 22-074).

I might like to try the Electrolube PRP. Where can it be purchased?

Thanks much,

Brian Chapman
Cedar Rapids, Iowa


---

Brian Chapman wrote:
>>If it's Electrolube PRP I wouldn't bother. The original stuff was 
> 
> OK, but they changed it a few years ago and I can't get the newer 
> stuff to work. <
> 
>>>I use it plenty of times to make boards with 8mil tracks and 
> 
> spacings without a single fault on a 10cm x 10cm board. It only 
> doesn't work when the technique is wrong (inadequate cleaning etc). <<
> 
> Apparently, CG Electronics is out of business. It's resist product 
> was called, Etch Resist Sensitizer (part no. 22-074).
> 
> I might like to try the Electrolube PRP. Where can it be purchased?
> 
> Thanks much,
> 
> Brian Chapman
> Cedar Rapids, Iowa

http://www.electrolube.co.uk/docs/bprototyping.html

The website has a distributor finder.

http://www.electrolube.co.uk/docs/finddistxt.html
http://www.google.com.au/search?q=electrolube+prp&ie=UTF-8&hl=en&btnG=Google+Search&meta=

----- Original Message ----- 

From: "Brian Chapman" <cornbeltroute@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Wednesday, June 23, 2004 4:30 PM
Subject: [Homebrew_PCBs] Re: CG Electronics spray resist?


> > If it's Electrolube PRP I wouldn't bother. The original stuff was
> OK, but they changed it a few years ago and I can't get the newer
> stuff to work. <
>
> >> I use it plenty of times to make boards with 8mil tracks and
> spacings without a single fault on a 10cm x 10cm board. It only
> doesn't work when the technique is wrong (inadequate cleaning etc). <<
>
> Apparently, CG Electronics is out of business. It's resist product
> was called, Etch Resist Sensitizer (part no. 22-074).
>
> I might like to try the Electrolube PRP. Where can it be purchased?

http://www.electrolube.co.uk/docs/bprototyping.html

It's readily available in the UK. Seno makes a wipe-on resist that's a lot
better. I've got some somewhere, as well as the PRP.

Leon

> Apparently, CG Electronics is out of business. It's resist product 
> was called, Etch Resist Sensitizer (part no. 22-074).


Try GC Waldom   www.gcwaldom.com   Last I knew that still carried 
the spray on resist.  I fine it much easier to just buy the boards 
with the resist already on them.  I use M.G. Chemical, buy from 
Circuit Specialist.

Ben