Homebrew PCBs

Swimming Pool shops - It's called "shock" the brand I find around here is called baquil. it's 27%

JT
  ----- Original Message ----- 
  From: Bill Maxwell 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Tuesday, June 06, 2006 8:11 PM
  Subject: Re: [Homebrew_PCBs] Re: Ammonium Persulphate


  G'Day Andrew

  As you mentioned Canberra, could you tell me your source for the peroxide? 
  I have no problem locating the acid, coutesy of swimming pool shops and 
  hardware outlets but I have yet to embark on the search for a good source of 
  peroxide in Oz.

  Thanks

  Bill

  ----- Original Message ----- 
  From: "Andrew" <andrewm1973@...>
  To: <Homebrew_PCBs@yahoogroups.com>
  Sent: Wednesday, June 07, 2006 8:50 AM
  Subject: [Homebrew_PCBs] Re: Ammonium Persulphate

  >> > andrewm wrote:
  >> > HOWEVER - if you only etch one board in a
  >> > blue moon - Amonia Persulphate or FeCl are
  >> > probably better ideas.
  >
  >> ST wrote:
  >> I wouldn't even be sure of that.
  >> There's no disadvantage of CuCl that i can
  >> see, so why would the others be better?
  >>
  >> As long as you have enough spare space to
  >> store your tank and two bottles of
  >> regenerating chemicals it really seems a
  >> good etchant. Of course if one can get the
  >> other etchants easier....
  >
  > It takes some time to make.
  > It takes some time to look after before use.
  > As you pointed out it takes some space.
  > Vapours from it can wreak things.
  > It does not etch as well as FeCl in an air
  > agitated tank. (line resolution)
  > You can't see the board like Amonia
  > Persulphate. (which may be good thing if
  > you only do a few boards and are not too
  > familiar with etching)
  > Your neighbours look at you funny and call
  > the anti-terrorisim hotline when you are
  > using it outside.
  >
  > There will be some point where it is more
  > sensible to mix up disposable etchant and
  > then dispose of it.
  >
  > That point might be one board in six months.
  > That point might be one board in two years.
  >
  > I dont know where that point is - but it
  > will be somewhere.
  >
  > For me - I am well above the point where CuCl
  > is a good idea and I love it very much (and
  > may marry it if Canberra changed the laws)
  >
  >
  >
  >
  >
  >
  >
  >
  >
  >
  > Be sure to visit the group home and check for new Links, Files, and 
  > Photos:
  > http://groups.yahoo.com/group/Homebrew_PCBs
  >
  > If Files or Photos are running short of space, post them here:
  > http://groups.yahoo.com/group/Homebrew_PCBs_Archives/
  > Yahoo! Groups Links
  >
  >
  >
  >
  >
  >
  >
  > 



   

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