Homebrew PCBs

Just a quick update on things.

The sprayer tank is completed by now and in the testing stage with water.
Made it 5mm glass as discussed, holds together well.
The 50mm PVC tube i tried was out of round and no good.
The RC model motor i tried hadn't enough power, a 100W grinder was too  
weak too so today i fitted a larger 200W motor which is much better.
I'm using a empty silicone syringe for now as sprayer tube, it was there  
and seems to work ok. Must drill more holes and check pattern and  
uniformity.

No further tests with silicone paper so far as i'm basically without a  
etching tank right now, which is rather frightening really. (emptied the  
old one into bottles to fit the new one in the plastic tray.)
Oh well, if i had to make a PCB really desperately i could tray-etch it...

ST