Homebrew PCBs

> 
> > - finding an affordable, highly conductive ink with particles fine 
> > enough to pass through the inkjet nozzles, and print 
> without errors, 
> > and without clogging the nozzles
> >
> > - finding a good insulating ink that will get enough coverage of 
> > enough thickness to avoid shorts or other electrically undesirable 
> >
> > Anyone got any thoughts on this?
> >
> > Cheers
> > David
> 
> There's a compound of Gallium, Indium and Tin that freezes at 
> minus 4  
> degrees F.    So it's liquid at room temperature.


Or find an etchant that works at low temperatures (and only attacks the
copper, of course).  It would make a change to toss something in the fridge
rather than into a tub of warm water.

This would be something a Peltier module can help with.  It can keep the PCB
cool, and be cheap and not take up much space while doing it.

Tony