Homebrew PCBs

> --- In Homebrew_PCBs@yahoogroups.com, "Herbert E. Plett" 
> <cachureos@> wrote:
>
> 
> 
> --- kilocycles <kilocycles@...> wrote:
> ...
> > The ferric chloride method typically takes me 20 minutes or so.  
> 
> at room temperature (not freezing, of course) shouldn't take more 
> than one
> minute or two per half board if you 'wipe' it gently with a soft 
> brush or tap
> it with a (home made jumbo) cotton swab during etching.
> the trick is to remove the 'used' etchant off the surface of the 
> board
> mechanically. no bubbles, no heating, no over etching, and you can 
> see what you
> are doing while you hold the board partially out of the bath.
> with this method you actually can watch the copper disappear...
> 

This assumes your toner transfer method will stand up to this. When I 
used Press'n'Peel with Xerox or HP laser printers, it held on fine for 
regular or bubble etching, but direct rubbing would 'flake' off the 
blue.

> 
> > I just happen to have a bottle of Future floor wax handy.  
> >...  So you can solder right through the stuff, eh?  Have to try 
> that.
> 
> sounds interesting to try.
> what kind of stuff is this? here we don't know your brands.
> 

I believe one of the names Johnson's uses for Future (in the UK at 
least) is Johnson's Kleer Floor Wax. Make sure it says acrylic based, 
/not/ wax based. Kleer is not 100% chemically the same as Future.