Liquid Zinc Flux for Stained Glass - 4oz - Stained Glass Flux for Soldering Work, Glass Repair and More - Liquid Flux for Stained Glass Solder - Stain Glass Tools and Supplies - Stained Glass Kit

Makes a great patina

This worked great for patina touch ups I needed to do to clean up 3 panels after I completely closed my studio. I used to buy a different brand and bigger bottle and this small bottle was much less expensive and equally effective for my needs. If you don't need much patina, this a good option.

Did not work on my well clean led came. Look black with a few minutes, but then turned gray.

Great product, Easy to use and perfect result

This is how full the bottle was when I got it. Pretty disappointing.

I’m new to stained glass and I love what this product can do to change the final look of my design.

works as advertised

I agree with those who said this does not turn solder black, it just turns a dark gray. Also there are NO after application instructions. Maybe something in the stained glass washing ruined the finish but who knows, there’s not enough information. It says to air dry and that’s it. But I can’t believe they don’t expect you to rinse off the excess off of the glass.