Homebrew_PCBs

> Hi,
>
> Would someone please let me know where I can purchase Positive
> Photo Resist in a spray can, mail order, in the US? I have done a
> bunch of searches and have had no luck. I have seen others ask this
> same question but have yet to see an answer. Your information would
> sure be appreciated. Thanks - Jack
>
>
>
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>
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>
>
>
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>
> ---
> [This E-mail scanned for viruses]

--- In Homebrew_PCBs@yahoogroups.com, Neil <cobra_neil@a...> wrote:
> I recently asked this as well. From the archives, the only place
I could find
> in the US is www.thinktink.com for a dry-film laminated method.
I'm still
> also looking for a spray-can source in the US.
>
> Cheers,
> -Neil.
>
>
>
> On Saturday 05 July 2003 14:48, jackafaz scribbled:
> > Hi,
> >
> > Would someone please let me know where I can purchase
Positive
> > Photo Resist in a spray can, mail order, in the US? I have done a
> > bunch of searches and have had no luck. I have seen others ask
this
> > same question but have yet to see an answer. Your information
would
> > sure be appreciated. Thanks - Jack
> >
> >
> >
> > Be sure to visit the group home and check for new Bookmarks and
files:
> > http://groups.yahoo.com/group/Homebrew_PCBs
> >
> > To unsubscribe from this group, send an email to:
> > Homebrew_PCBs-unsubscribe@yahoogroups.com
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> > ---
> > [This E-mail scanned for viruses]

> The only one that makes it that I know of is GC Electronics.
>
> Cat.# 22-0074-0000
>
> Now I am not sure about a stocking dist., so far the ones I looked
> up don't seem to stock this product.
>
> I used it 11 or so years ago found it more trouble than it was worth
> to use.
>
> I use MG Chemicals presensitized boards 600 series, have very good
> results using them. GC Electronics also makes some also.
>
> For the MG Chemicals I buy them thru Circuits Specialist, Inc.
> www.web-tronics.com Circuit Specialist also has some pos.
> presensitized boards slightly lower price than the MG Chemicals but
> I have not tried them. You can also get most everything you need in
> supplies at Circuit Specialists.
>
> Ben H. Lanmon
> bhleavi@...
> benhlanmon@...
>
> --- In Homebrew_PCBs@yahoogroups.com, Neil <cobra_neil@a...> wrote:
> > I recently asked this as well. From the archives, the only place
> I could find
> > in the US is www.thinktink.com for a dry-film laminated method.
> I'm still
> > also looking for a spray-can source in the US.
> >
> > Cheers,
> > -Neil.
> >
> >
> >
> > On Saturday 05 July 2003 14:48, jackafaz scribbled:
> > > Hi,
> > >
> > > Would someone please let me know where I can purchase
> Positive
> > > Photo Resist in a spray can, mail order, in the US? I have done a
> > > bunch of searches and have had no luck. I have seen others ask
> this
> > > same question but have yet to see an answer. Your information
> would
> > > sure be appreciated. Thanks - Jack
> > >
> > >
> > >
> > > Be sure to visit the group home and check for new Bookmarks and
> files:
> > > http://groups.yahoo.com/group/Homebrew_PCBs
> > >
> > > To unsubscribe from this group, send an email to:
> > > Homebrew_PCBs-unsubscribe@yahoogroups.com
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > > ---
> > > [This E-mail scanned for viruses]
>
>
> Yahoo! Groups Sponsor

>
> Be sure to visit the group home and check for new Bookmarks and files:
>
> http://groups.yahoo.com/group/Homebrew_PCBs
>
> To unsubscribe from this group, send an email to:
> Homebrew_PCBs-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

>The spray you need is named POSITIVE 20 made by KONTAKT CHEMIE has Art.
>No. 20.820.6.04.25.02
>I got my last can from the UK, but can't find the source right now.
>I used Circuit Specialists for a while until they jacked up the price
>too much, then I found
>
>http://www.oselectronics.com/ose_p78.htm
>
>6" X 9" double side board for $9.90
>
>About the Positive 20:
> I used it for many years, the trick is to clean the PCB ONLY with Ajax
>powder and water. Make a small paper towel pad, wet it and the board
>then apply Ajax powder and rub in small circles. DO NOT use wire wool.
>The reason: Ajax powder makes the surface much smoother and when you
>spray the Positive 20 on it, the surface tension is far lower and it
>allows the Positive 20 to spreads in an even film. ( no need to spin it
>and all that other crap... )
>If you use wire wool the Positive 20 will bead and not spread, and after
>using wire wool there is NO hope of getting Positive 20 to spread evenly
>unless you spin it... and that's a big mess.
>Dry it in a dust free environment, you can also speed up drying by
>placing in a warm oven.
>Positive 20 exposes fine with a Garden Grow Lamp, and develops very well
>using household Lye ( I use Red Devil Lye)
>
>Good luck...
>hansw
>PS may be some one form UK knows where it can be purchased.

> Hi,
>
> Would someone please let me know where I can purchase Positive
> Photo Resist in a spray can, mail order, in the US? I have done a
> bunch of searches and have had no luck. I have seen others ask this
> same question but have yet to see an answer. Your information would
> sure be appreciated. Thanks - Jack

--- In Homebrew_PCBs@yahoogroups.com, "Ben" <bhleavi@y...> wrote:
> The only one that makes it that I know of is GC Electronics.
>
> Cat.# 22-0074-0000
>
> Now I am not sure about a stocking dist., so far the ones I looked
> up don't seem to stock this product.
>
> I used it 11 or so years ago found it more trouble than it was
worth
> to use.
>
> I use MG Chemicals presensitized boards 600 series, have very
good
> results using them. GC Electronics also makes some also.
>
> For the MG Chemicals I buy them thru Circuits Specialist, Inc.
> www.web-tronics.com Circuit Specialist also has some pos.
> presensitized boards slightly lower price than the MG Chemicals
but
> I have not tried them. You can also get most everything you need
in
> supplies at Circuit Specialists.
>
> Ben H. Lanmon
> bhleavi@y...
> benhlanmon@e...
>
> --- In Homebrew_PCBs@yahoogroups.com, Neil <cobra_neil@a...> wrote:
> > I recently asked this as well. From the archives, the only
place
> I could find
> > in the US is www.thinktink.com for a dry-film laminated method.
> I'm still
> > also looking for a spray-can source in the US.
> >
> > Cheers,
> > -Neil.
> >
> >
> >
> > On Saturday 05 July 2003 14:48, jackafaz scribbled:
> > > Hi,
> > >
> > > Would someone please let me know where I can purchase
> Positive
> > > Photo Resist in a spray can, mail order, in the US? I have
done a
> > > bunch of searches and have had no luck. I have seen others ask
> this
> > > same question but have yet to see an answer. Your information
> would
> > > sure be appreciated. Thanks - Jack
> > >
> > >
> > >
> > > Be sure to visit the group home and check for new Bookmarks
and
> files:
> > > http://groups.yahoo.com/group/Homebrew_PCBs
> > >
> > > To unsubscribe from this group, send an email to:
> > > Homebrew_PCBs-unsubscribe@yahoogroups.com
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > > ---
> > > [This E-mail scanned for viruses]

> Hi,
>
> Would someone please let me know where I can purchase

> Photo Resist in a spray can, mail order, in the US? I have done a
> bunch of searches and have had no luck. I have seen others ask

> same question but have yet to see an answer. Your information

> sure be appreciated. Thanks - Jack

----- Original Message -----
From: "ghidera2000" <ghidera2000@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Sunday, July 06, 2003 4:49 AM
Subject: [Homebrew_PCBs] Re: Positive resist


> Are you really sure you want to use the spray on stuff? Here's the
> acute and chronic effects section of its MSDS

[deleted]

I've used it occasionally, and haven't noticed anything untoward. The
current stuff from Electrolube doesn't work very well, though. They changed
suppliers, the old stuff was much better.

Leon
--
Leon Heller, G1HSM
leon_heller@...
http://www.geocities.com/leon_heller