Homebrew PCBs

Guys,

things are not going well with the sprayer..

The acrylic silicone is definitely trash, the standard silicone doesn't  
stick well (at all) on the lexan.
I have tried everything, roughening the surface, cleaning well, ... it  
still comes off way too easy.

I can go and buy new silicone for acrylic glass, but i'm not too sure it  
will hold all that much better.

welding, i'm kind of reluctant because it is a very final thing, changes  
on the tank will be almost impossible.
Also, i have not tried yet how hard welding lexan is.

I'm thinking about other glues, but i would have preferred silicone  
because one can easily fill gaps and make thick beads.

Didn't expect _AT ALL_ that the gluing will be so much trouble.

ST