Homebrew PCBs

Does anyone here use liquid photoresist anymore?  On a lark, I looked for
photoresist on Ebay and came up with this stuff:
http://advancedcoatingsinternational.com/prod01.htm

Unlike all the other spray-on stuff I've seen, this is available in the
US.  It costs around $55 a quart, is negative-acting, and cleans up with
soap and water.  I'm a bit leery of using presensitized boards because of
the cost and because I already have a decent amount of non-sensitized
boardstock.

-- 
David Griffith
dgriffi@...

Any idea as to how much it takes to cover a board, say 8" x 12"

Where do you buy it from?  Have you tried it?


Ben

In my opinion I would stay away from it. It usually comes in a spray and the difficulty is getting an even layer without any particles in - almost impossible in my experience. 

regards Peter

  ----- Original Message ----- 
  From: Ben 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Friday, February 15, 2008 4:02 PM
  Subject: [Homebrew_PCBs] Re: liquid photoresist


  Any idea as to how much it takes to cover a board, say 8" x 12"

  Where do you buy it from? Have you tried it?

  Ben



   

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

8"x12" = 4 eurocards. about 4ccm.

Ben <bhleavi@...> wrote:          Any idea as to how much it takes to cover a board, say 8" x 12"

Where do you buy it from? Have you tried it?

Ben



                         

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

I suppose that he is regarding the professional photoresist (not KPR, 
Positiv20, and so on, that stuff is useless). The professional 
photoresist comes in liquid form and is applied with a dip coating 
machine. With a litter of it you can cover approximately 200-300 PCBs 
sized 12" by 12".

--- In Homebrew_PCBs@yahoogroups.com, "jcarlosmor" <jcarlosmor@...> 
wrote:
>
> I suppose that he is regarding the professional photoresist (not KPR, 
> Positiv20, and so on, that stuff is useless). The professional 
> photoresist comes in liquid form and is applied with a dip coating 
> machine. With a litter of it you can cover approximately 200-300 PCBs 
> sized 12" by 12".
>
 That is correct, guess maybe I should have not cut all the orginally 
post that I replied too, I was referring to the ACI photoresit.  They 
also have solder mask and legend ink.

Has anyone here used any of the ACI products?


Ben