Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "David R. Rachels"
<drachels1@...> wrote:
>
> What is "Steve's Cleaning Mix"?

http://www.polyphoto.com/tutorials/PrintHeadCleaning

    * 5 parts distilled or filtered water
    * 4 parts 50% or 70% isopropyl alcohol - clear
    * 1 part clear nonsudsing household ammonia - clear

NO drinking water, NO purified water. "Purified" just means anything
alive has been killed, still has all the metals and minerals.

I found that isopropyl just didn't remove all dried ink. Denatured
alcohol has the downside that it attacks some plastics (specifically
the plastic that most/all desktop printers are made of) and doesn't
dissolve ink appreciably better than isopropyl. And it doesn't take
much ammonia to dissolve even long-dried ink.

The alcohol is in there as a just-in-case, as it does have some ink
dissolving powers.

Steve Greenfield