Pros : I normally LOVE glassline pens. They are great for drawing fine detail and I use them regularly. The color is pretty and truly metallic.
Cons : This color was so thick and gloppy that it was impossible to get fine detail. It was so thick that it could not be used with the glassline tips. VERY disappointing.
Other Thoughts : I prefer the glassline gold as the consistency is great and you can get very fine detail. I also like the gold color better than the copper. I would use this if I could thin it somehow.
Pros : Easy to use and clean up;
although liquid, easy to control during use
Cons : Just be careful not to make your lines to thick - it could chip off after firing if you use it on top of your glass
Other Thoughts : I'm sure this can be used to draw and accent designs, but it was my best solution yet to signing fused pieces. It is recommended for use between layers, but it has worked well for my signature on top of a piece.