Hi,

I am using the shipley 1805 to coat my plate to make hologram. My process is

1. coat the glass with 1805, then let it air dry for about 4 days.
2. make some hologram on it.
3. silver spray
4. put into electroforming tank grow to a thick shim.
5. seperate the shim from the glass. used NaOH 5% to remove the photoresistor
from the silver layer.

Now the problem I got is when I put the silver shim back into tank to make a
copy. the copy is always got stick and lots of water strip. People think it is
because the photoresistor is not compeletly removed from the silver layer or
maybe the silver layer gets destroyed by NaOH. Does anyone have any idea why
this happens? Do I really have to bake the photoresistor to make it easy to
remove? Can anyone recommend some remover? I try the shipley 1112A. seems does
not work at all. Thanks!


Paddy