Re: PCB Etching (again!) - chemicals used

I use Amonium Persulphate in a Kinsten etching tank and it works great.
Made a couple of modifications though. Bought a higher wattage aquarium
heater at the pet store so I can get the tank up to working temperature a
lot faster and made a cover from 1/2" acrylic to reduce evaporation between
sessions. I use the same solution for about a month etching 8 to 10 boards.

Takes about half a 1kg bottle of MG Chemicals amonium perulphate crystals to
mix enough to fill the tank and it is FAR cleaner than feric chloride.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

> Hey Michael, I used to use Ammonium Persulphate but Ferric Chloride is
> much
> better. I got 4L from a PCB maker but you can get it here
> http://www.altronics.com.au/index.asp?area=item&id=H0800 . I practice the
> same procedure as outlined here http://www.geocities.com/pdmtr/ but with
> the slight distinction that I warm up my FC to bath temp on the BBQ. Use
> the
> Press-n-Peel from Jaycar http://www1.jaycar.com.au/ and the main point is
> clean the board thoroughly with a cream cleanser like Jif or Ajax before
> ironing. The whole process from printing to drilled board is less than an
> hour.
>
> Cheers.
>
>


.

Relevant Pages

  • Re: PCB Etching (again!) - chemicals used
    ... > I use Amonium Persulphate in a Kinsten etching tank and it works ... Ha -- I actually broke my heater for the Kinsten tank on Friday. ... thermostats which would limit the temperature to a much lower range. ...
    (sci.electronics.design)
  • Re: PCB Etching (again!) - chemicals used
    ... crystals to mix enough to fill the tank and it is FAR cleaner than feric chloride. ...
    (sci.electronics.design)