COPPER-MATE PASTE FLUX Canfield Stained Glass Supplies Soldering 2 oz ORMD

This is the flux that I use in my studio and with my students. I love this stuff. Paste flux doesn't run all over your project and is easy to control. I use an acid quality brush trimmed at an angle to apply. No need to reapply if you need to leave your project for a while.  A two ounce jar goes a long, long way!