Homebrew PCBs

On 02/03/14 11:38, James Sleeman wrote:
> I will try curing an alcohol diluted sample today as I normally would 
> under cellophane without baking and see if it can still be cured or if 
> it is the changes induced by the alcohol thinning which causes the 
> problem.

I can confirm that the diluted airbrushed coating does UV cure when wet 
and covered with the usual cellophane - although I only did a brief 
exposure to check so I could clean it off again, I didn't do a long 
exposure yet so don't know if the other properties of hardness, non 
conductivity, soldering heat resistance etc remain.

So that I guess leaves two possibles for the non-exposure of the "dried" 
one.  Heat damaging the UV cure properties.  Or the "drying" meaning 
that the oxygen removal of the cellophane layer is not possible (due to 
not sticking to it as it does when wet) - as we know, this stuff doesn't 
normally UV cure in the presence of oxygen, at least when wet.

Hmm.  I don't have an oven that can accurately hold 100 degrees C :-/