DrDichro
12-24-2009, 10:56
Reading through some of these posts, I am not sure what kind of paints you all are talking about - application then firing, or special paints that stick to raw glass without pre-treatment or post firing.
So I would like to hear a simple basic explanation of how Rousche (sp?) glass paint works, and in exchange I'll add my method for those interested in application of glass paint to raw glass (plate or blown /slumped shapes).
As we all know, paint don't stick to glass (generally, besides expensive Opacicoat systems etc), so in my methods (back or front painting plate glass) I have tried to come up with ways to use off the shelf (especially my own paint shelf with thousands of $ of pearlescents, etc) paints and have experimented with siloxane adhesion promoters, etc.
But the best method I have found is to simply apply a thin coat of good UV glass adhesive (I use Loctite 352) and cure it, then paint on top of the cured glue film (essentially a "primer" for glass). Adhesion is awesome, and most paints stick well.
My UV light is very powerful and will cure even the surface of my UV glue, so I can stick directly to cured surface, but if your UV lamp is not powerful enough, it will cure the base layer while oxygen inhibition will leave the wet surface, so you would simply wipe off that surface with alcohol, acetone or laquer thinner to get to a hard surface to paint on.
Any other tricks?
So I would like to hear a simple basic explanation of how Rousche (sp?) glass paint works, and in exchange I'll add my method for those interested in application of glass paint to raw glass (plate or blown /slumped shapes).
As we all know, paint don't stick to glass (generally, besides expensive Opacicoat systems etc), so in my methods (back or front painting plate glass) I have tried to come up with ways to use off the shelf (especially my own paint shelf with thousands of $ of pearlescents, etc) paints and have experimented with siloxane adhesion promoters, etc.
But the best method I have found is to simply apply a thin coat of good UV glass adhesive (I use Loctite 352) and cure it, then paint on top of the cured glue film (essentially a "primer" for glass). Adhesion is awesome, and most paints stick well.
My UV light is very powerful and will cure even the surface of my UV glue, so I can stick directly to cured surface, but if your UV lamp is not powerful enough, it will cure the base layer while oxygen inhibition will leave the wet surface, so you would simply wipe off that surface with alcohol, acetone or laquer thinner to get to a hard surface to paint on.
Any other tricks?